Identification_Information:

    Citation:

      Citation_Information:

        Originator: Spectrum Geosciences Ltd.

        Originator: Knudson, C.

        Originator: Osei Boakye, N.

        Originator: Morley, E.C.

        Originator: Alberta Geological Survey

        Originator: Alberta Energy Regulator

        Publication_Date: 2025

        Title: Portable X-Ray Fluorescence Geochemical Dataset for Selected Drillcore from Coal-Bearing Strata in Central and Southern Alberta (tabular data, tab-delimited format)

        Geospatial_Data_Presentation_Form: tabular digital data

        Series_Information:

          Series_Name: Digital Data

          Issue_Identification: DIG 2025-0007

        Publication_Information:

          Publication_Place: Edmonton, Alberta, Canada

          Publisher: Alberta Geological Survey

        Online_Linkage: https://ags.aer.ca/publications/all-publications/dig-2025-0007

    Description:

      Abstract: This digital data release includes the results of portable X-ray fluorescence (pXRF) analysis of selected drillcore intersecting coal seams from the Alberta portion of the Western Canada Sedimentary Basin. The aim of this project was to generate a publicly available geochemical dataset for coal-bearing strata in Alberta. The drillcore was chosen from the collections at the Alberta Geological Survey (AGS) Mineral Core Research Facility in Edmonton. Selection was based on geospatial location, geological units intercepted, coal seam thickness and condition of each drillcore. The Alberta Energy Regulator (AER)/AGS engaged Spectrum Geosciences Ltd. to execute the pXRF analysis from February to April 2024. Over 1 600 metres of drillcore from 40 unique drillholes were analyzed by pXRF for 41 elements at 10-centimetre intervals, yielding 16 222 sample points. The intervals analyzed were determined by coal seam distribution and core condition, and include measurements of coal, shale, siltstone, sandstone, and other associated lithologies. High-resolution core photos showing the locations of these measurement points will be made available through the AGS Core Data Interactive Map.

This work was completed under the Mineral Grant provided by the Government of Alberta dated June 22, 2021.

      Purpose: The purpose of this publication is to publish the data collected during the Coal Core Geochemistry project under the Mineral Mapping Program.

      Supplemental_Information:

    Time_Period_of_Content:

      Time Period Information:

        Single Date/Time:

          Calendar_Date: 20240419

    Currentness_Reference: ground condition

  Status:

    Progress: Complete

    Maintenance_and_Update_Frequency:

  Spatial Domain:

    Bounding Coordinates:

      West_Bounding_Coordinate: -119.9343583

      East_Bounding_Coordinate: -111.67803

      North_Bounding_Coordinate: 54.59071222

      South_Bounding_Coordinate: 49.34297986

  Keywords:

    Theme:

      Theme_Keyword_Thesaurus: ISO 19115 Topic Category

      Theme_Keyword: alberta plains

      Theme_Keyword: ardley

      Theme_Keyword: coal

      Theme_Keyword: drillcore

      Theme_Keyword: foothills

      Theme_Keyword: geochemistry

      Theme_Keyword: geology

      Theme_Keyword: lethbridge coal zone

      Theme_Keyword: luscar

      Theme_Keyword: mineral mapping program

      Theme_Keyword: western canada sedimentary basin

      Theme_Keyword: x-ray fluorescence analysis

    Place:

      Place_Keyword_Thesaurus: ISO 19115 Topic Category

      Place_Keyword: alberta

      Place_Keyword: canada

  Access_Constraints: Public

  Use_Constraints: Acknowledgement of the Alberta Energy Regulator / Alberta Geological Survey as the originator/source of this information is required as described in the Open Government License - Alberta.

  Point_of_Contact:

    Contact_Information:

      Contact_Organization_Primary:

        Contact_Organization: Alberta Geological Survey

        Contact_Person: AGS Information Manager

      Contact_Position: AGS Information Manager

      Contact_Address:

        Address_Type: mailing and physical

        Address: Alberta Energy Regulator

        Address: 2nd Floor, Twin Atria Building

        Address: 4999-98 Avenue NW

        City: Edmonton

        State_or_Province: Alberta

        Postal_Code: T6B 2X3

        Country: Canada

      Contact_Voice_Telephone: (780) 638-4491

      Contact_Facsimile_Telephone: (780) 422-1459

      Contact_Electronic_Mail_Address: AGS-Info@aer.ca

      Hours_of_Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

  Cross_Reference:

    Citation_Information:

      Originator: Alberta Energy Regulator

      Originator: Alberta Geological Survey

      Publication_Date: 2023

      Title: Core Data Interactive Map

      Geospatial_Data_Presentation_Form:

      Series_Information:

        Series_Name: Interactive App and Map

        Issue_Identification: IAM 014

      Publication_Information:

        Publication_Place: Edmonton, Alberta, Canada

        Publisher: Alberta Geological Survey

      Online_Linkage: Not available online.

Data_Quality_Information:

  Attribute_Accuracy:

    Attribute_Accuracy_Report: The analytical results provided by Spectrum Geosciences Ltd. include values for analytical error. In both the compilation file of the full dataset and the individual "Format1" files containing the data for each core, the analytical error for each element, X, is provided in a separate column labelled X_err, for each pXRF measurement.

  Logical_Consistency_Report: Zero values (0) denote elemental concentrations below the limit of detection (LOD). Values of "-9999" denote missing data or null values. Core depth intervals with values of "-9999" for every analyte at that depth indicate where core is missing or in a condition that precludes analysis.

This geochemical dataset is presented in multiple tab-delimited text files (*.txt). There is one compilation data file ("DIG_2025_0007_Coal_Core_pXRF_Compilation_Dataset.txt") which includes the measurement results for all 40 drillcores analyzed. There is also a folder ("DIG_2025_0007_Coal_Core_pXRF_Individual_Datasets") which contains two sub-folders ("Format_1"and "Format_2"), each with 40 separate core files which include the measurement results for each of the analyzed cores. These individual core data files follow the naming convention "_pXRF_Format1/Format2___.txt", wherein "UWI" denotes the core's 21-digit universal well ID location formatted as LL-SS-TTT-RRWM where: L = legal subdivision or quarter section, S = section, T = township, R = range, W = west of, M = meridian; "Format1" or "Format2" indicates how the information in the text file is presented; "pXRF_top" is the depth of the top of the analyzed interval (shallowest pXRF measurement point) in the original units of measure; "pXRF_base" is the depth of the bottom of the analyzed interval (deepest pXRF measurement) in the original units of measure; and "OUM" is the original unit of measurement for depth in the core ("F" = feet, "M" = metres). Depth is assumed to be measured from the drilling rig collar location, at the ground surface.

Within the pXRF analysis interval, the core sample points were measured every 10 cm along the length of the core. The depth increments of the pXRF sample points may vary due to intervals of missing core or poor core condition. Three different certified reference materials (CRMs) were analyzed after every 20 core sample points; the use of these CRMs for data quality assurance and quality control (QAQC) is described in the Data Quality section. The "Format1" data files present analyte concentrations and errors for measured sample points on the core, and for repeat measurements of the three CRMs. The "Format1" data files do not include rows for intervals of missing core or poor core condition. The "Format2" data files present analyte concentrations in a continuous series of rows at 10-cm increments extending from the top to the base of the pXRF analysis intervals, including sections of missing core or poor core condition (denoted by analyte values of "-9999"). The "Format2" data files do not include analyte errors or measurements of CRMs.

A complete list of the cores analyzed for this project, along with their respective identifiers, geospatial locations, storage locations, drilling companies, top/bottom depths, analyzed intervals, and geological unit intersections is presented in the accompanying core metadata file named "DIG_2025_0007_Coal_Core_pXRF_List.txt". Geospatial location coordinates for the cored drillholes were determined by converting the centroid of the DLS location to latitude/longitude. All locations were checked for uniqueness. There are three categories of geological units that are attributed to the core: stratigraphic formations, Geological Framework of Alberta model zones (Alberta Geological Survey, 2021), and Alberta 3D coal zone model zones (Atkinson and Pana, 2019). The stratigraphic formations intersected by the cores were recorded from the scanned industry-submitted reports in the AER archives. The Geological Framework of Alberta model zones and Alberta 3D coal zone model zones intersected over the length of the cored interval and at the core's geospatial location were extracted using ArcGIS.

References:

Alberta Geological Survey (2021): Geological Framework of Alberta, version 3; Alberta Energy Regulator / Alberta Geological Survey, AER/AGS Interactive App or Map 012.

Atkinson, L.A. and Pana, C. (2019): 3D geological model of coal zones in central and southern Alberta (methodology, model, dataset, multiple files); Alberta Energy Regulator / Alberta Geological Survey, AER/AGS Model 2017-04.

  Completeness_Report: At the time of this writing, there are 679 coal cores stored at the Alberta Geological Survey's (AGS) Mineral Core Research Facility in Edmonton and eight coal cores stored at the Alberta Energy Regulator's (AER) Core Research Facility in Calgary. The 40 cores analyzed for this project represent only a small subset of the total coal core collection. Cores were selected for analysis based on geospatial location, geological units intersected, core condition, core length, and coal seam thickness. Estimations of coal seam thickness were based on scanned logs submitted by industry.

Most of the cores included in this project were not analyzed in their entirety. The "DIG_2025_0007_Coal_Core_pXRF_List.txt" file included in this publication includes separate depth ranges for the cored interval ("Core_top" to "Core_base") and the analyzed interval ("pXRF_top" to "pXRF_base"); in most cases, only a portion of each core was analyzed. The portable X-ray fluorescence analysis (pXRF) interval for each core was defined 5 m above and below each coal seam intersected by the core. The pXRF measurements were taken every 10 cm within that analysis interval, and three certified reference materials (CRMs) were analyzed every 20 sample points.

In addition to the portable X-ray fluorescence (XRF) analysis results, Spectrum Geoscience Ltd. ("Spectrum") also delivered calculated gamma-ray (GR) values, core photos, and quality control documents.

Spectrum provided geochemical data from pXRF measurements of each core in multiple file formats: comma-separated values fles (CSV), Microsoft Office Excel Open XML (XLSX, two versions), Joint Photographic Experts Group (JPEG), and WellCAD Log (WCL) formats. The CSV files and one version of the XLSX files include a row for every 10 cm within the analysis interval, including sections of missing data or null values; these sections are denoted by values of "-9999" for every analyte at that depth, and indicate where core is missing or in a condition that precludes analysis. This version does not include analyte errors or CRM measurements. The other version of the XLSX files includes rows for only the pXRF measurements and excludes missing data and null values. This version includes analyte errors and CRM measurements.

Spectrum provided calculated GR data from pXRF measurements of each core in multiple file formats: CSV, JPEG, Log ASCII Standard (LAS) files, and WCL. Each of these files include measurement results for K2O, Th, and U, as well as calculated GR values for each sample point; these data are not published as separate files, as values for K, Th, U, and GR are already included in the full geochemical dataset, and K2O can be easily calculated.

The XLSX/CSV files of pXRF analytical results for each core were converted to two tab-delimited text (TXT) files, "Format1" and "Format2", which have been described in detail in the Logical Consistency section. In addition to the individual core data files, the pXRF analytical results were compiled by AGS into one data compilation file (in TXT format) of the analyte concentrations and errors at each pXRF sample point. This compilation file does not include CRM measurements, missing data, or null values, as these are available in the individual core data files. Analytical results for all data files are presented as received from Spectrum, but some columns ("OUM", "Type", "Vendor", Publisher") were added by the AGS for clarification.

Spectrum provided high-resolution photos of each coal core as multiple, individual JPEG files, and as single, multi-page portable document format (PDF) files. The core photos are not included in this digital data release and will be published on the AGS Core Data Interactive Map (Alberta Geological Survey, 2023) at a later date.

The quality control documents provided by Spectrum include a daily limit check report and a calibration report. The contents of the daily limit check report are presented as received from the vendor, reformatted as tab-delimited text files (in the folder "pXRF_Daily_Limit_Checks") for the purposes of publication. The calibration report ("XRF LOD and Calibration Info (Vanta VMR Air).pdf") is published as received from the vendor, in the original format.

Reference:

Alberta Geological Survey (2023): Core data interactive map; Alberta Energy Regulator / Alberta Geological Survey, AER/AGS Interactive App or Map 014.

  Positional_Accuracy:

    Horizontal_Positional_Accuracy:

   Horizontal_Positional_Accuracy_Report: Geospatial location coordinates for 39 of the 40 core drillholes were retrieved from the AER Geological Data Management (GDM) System. The coordinates listed in GDM were determined by industry surveys at the time of drilling and submitted to the AER by their respective companies. At the time of data entry, the AER converted these coordinates to universal well identifiers (UWIs) based on the Dominion Land Survey (DLS) system.

One of the analyzed coal cores (CH 66-1, UWI: 100/02-25-026-02W5/00, EEID: 9999992) does not have a record in GDM. In this case, the DLS location was retrieved from the AGS Mineral Core Research Facility coal core inventory list and the centroid of this location was converted to latitude/longitude.

All locations were checked for uniqueness. The error associated with the horizontal geospatial locations is unknown.

    Vertical_Positional_Accuracy:

   Vertical_Positional_Accuracy_Report: All depth values are reported as core depth measured along the length of the drillhole. Depth is assumed to be measured from the drilling rig collar location, at the ground surface. The coal cores in the AER/AGS core inventory were drilled by multiple different operators over a time period spanning several decades, and so some variation in the measurement and reporting of core depths is expected. The core depth measurement error is unknown.

  Data_Quality_Information: Spectrum Geosciences Ltd. ("Spectrum") used three portable X-ray fluorescence (pXRF) instruments to analyze the cores for this project. All three pXRF instruments were of the same make and model (Olympus Vanta VMR), and are distinguished by unique, six-digit identifiers (823644, 823655, 824431). All three pXRF instruments were operated with the geoChem3-Extra mode, and the data was calibrated using a method developed by XRF Solutions. The operation mode and calibration procedure are described in the accompanying calibration report ["XRF LOD and Calibration Info (Vanta VMR Air).pdf"] which is published as received from the vendor.

The calibration report ("XRF LOD and Calibration Info (Vanta VMR Air).pdf") includes a description of the pXRF analyzer calibration procedure, a list of the 41 certified reference materials (CRMs) used for calibration, and calibration information for 41 elements. For each element (X) reported, there is a plot of the standard concentration of X as a function of the calibrated concentration of X with the coefficient of determination (R-squared or R^2), the estimated limit of detection for that element, and the average and maximum error values associated with that element. This report is saved in the "QAQC" folder of the publication file.

The Alberta Geological Survey (AGS) provided Spectrum with three CRMs: SARM 19, OREAS 124, and REE-1, which were selected based on the similarity of their matrices to the lithologies expected in the coal cores and/or the analytes reported in their certificates, as well as their commercial availability at the time of project execution. These CRMs were anonymized for blind testing as CRM 1, CRM 2, and CRM 3, respectively. More details on these CRMs, including their matrix material, source, and lab-reported geochemical compositions are compiled in the tab-delimited text file named "CRM_Compositions.txt", located in the "QAQC" folder.

Over the course of this project, Spectrum performed daily limit checks on the three CRMs to ensure that the portable X-ray fluorescence (pXRF) analyzers were functioning as expected. Spectrum provided a report of the daily limit checks conducted by the pXRF operators. This report has been re-formatted for publication by AGS as multiple tab-delimited text files, each with the naming convention: "[pXRF Instrument ID]_crm_[x]_Limit_Check.txt". The "pXRF Instrument ID" is a six-digit number corresponding to the specific pXRF instrument. The values and contents of the report are unchanged. The upper confidence limits (UCL) and lower confidence limits (LCL) for the concentration of each element checked in each CRM, for each pXRF instrument, are tabulated in the "CRM_Confidence_Limits.txt" file. This file, along with the results of the daily limit checks, are saved in the "pXRF_Daily_limit_Checks" subfolder of the "QAQC" folder.

While analyzing each core for this project, Spectrum took measurements of the three AGS-provided CRMs every 20 core sample points to ensure accuracy and consistency. The CRM measurements taken during analysis of each core are included in their respective individual core data files in the "Format_1" subfolder of the "DIG_2025_0007_Coal_Core_pXRF_Individual_Datasets" folder (e.g., "100022502602W500_pXRF_Format1_37-907_F.txt"). For each coal core analyzed, the AGS calculated the coefficient of determination (R squared or R^2) for each analyte to quantify the strength of the relationship between the measured concentrations of that analyte and the lab-reported concentrations of that analyte. When evaluating these relationships, the AGS used the following R^2 ranges to define various types of relationships between measured and reported analyte concentrations in the AGS CRMs: R^2 > 0.8 = strong relationship, 0.8 > R^2 > 0.5 = moderate relationship, 0.5 > R^2 = weak relationship, NaN (null) = no relationship.

The R^2 values for 23 out of the 41 elements analyzed (Si, S, K, Cr, Mn, Fe, Cu, Zn, As, Rb, Y, Zr, Nb, Sn, Ba, La, Ce, Pr, Nd, W, Pb, Th, and U) are greater than 0.8 in all 40 cores, suggesting a consistently strong relationship between the measured concentrations of these elements and their lab-reported values in the CRMs.

The R^2 values for an additional five elements (Mg, Al, Ca, Ni, Ti) are greater than 0.8 in all 40 cores, with one exception for Mg, Al, Ca, Ni, and Ti, and two exceptions for Ti; in these anomalous cores, the R^2 values for these elements were between 0.5 and 0.8, suggesting a mostly consistently strong relationship. Both the Spectrum calibration report and AGS analysis suggest reasonably high accuracy in the results for these elements.

The R^2 values for Mo and Hg are greater than 0.8 in most cores, with several exceptions in the 0.5-0.8 range for Mo only (eight cores), Hg only (ten cores), or both (four cores). There is an additional exception in the sub-0.5 range for Mo. This range of R^2 values for Mo and Hg suggest moderate to strong relationships between the measured concentrations of these elements and their lab-reported values in the CRMs.

According to the calibration report provided by Spectrum, the calibrated XRF concentrations of Mo show good agreement with the concentrations of Mo in their in-house standards, with an R^2 value of 0.9982. The estimated LOD was 0.0015 wt. % and the average error was 0.0007 wt. %, with a maximum error of 0.0022 wt. %. AGS accuracy analyses found that the certified concentrations of Mo are below the LOD in two CRMs: [Mo] in CRM 2 is 0.00000765 wt. %, and [Mo] in CRM 2 is 0.000117 wt. %. CRM 1 does not have a certified concentration value for Mo. Since the AGS-provided CRMs do not have a complete set of certified concentrations for Mo, the Spectrum calibration report should take precedence over the AGS accuracy analyses when assessing the results for Mo.

Hg is not reported in the calibration report provided by Spectrum, so the relationship between the calibrated XRF concentrations of Hg with the concentrations of Hg in Spectrum’s in-house standards is unknown. Likewise, there are no values available for the LOD, average error, or maximum error associated with Hg. One of the AGS-provided CRMs (CRM 3) does not have a certified value for the concentration of Hg, and so this seemingly good agreement is based on only two CRMs; users are advised to exercise discretion when interpreting results for Hg.

The R^2 values for Sr are between 0.5 and 0.8 in all cores, suggesting a consistently moderate relationship between the measured concentrations of this element and its lab-reported values in the CRMs. According to the calibration report provided by Spectrum, the calibrated XRF concentrations of Sr show good agreement with the concentrations of Sr in their in-house standards, with an R^2 value of 0.9979. The estimated LOD was 0.0003 wt. % and the average error was 0.0016 wt. %, with a maximum error of 0.0067 wt. %. AGS accuracy analyses found that the certified concentrations of Sr are above the LOD in all CRMs: [Sr] in CRM 1 is 0.0126 wt. %, [Sr] in CRM 2 is 0.0188 wt. %, and [Sr] in CRM 3 is 0.0129. The consistently moderate R^2 values could be due to the relatively high errors on measurements of Sr but demonstrate good agreement between XRF-measured concentrations of Sr and the certified values of Sr in the CRMs. Both the Spectrum calibration report and AGS analysis suggest reasonably high accuracy in results for Sr.

The R^2 values for Ga are greater than 0.8 in 23 out of 40 cores, less than 0.5 in seven cores, and null in 10 cores, suggesting a highly variable relationship between the measured concentrations of this element and its lab-reported values in the CRMs.

According to the calibration report provided by Spectrum, the calibrated XRF concentrations of Ga show good agreement with the concentrations of Ga in their in-house standards, with an R^2 value of 0.9635. The estimated LOD was 0.0015 wt. % and the average error was 0.0003 wt. %, with a maximum error of 0.0009 wt. %. AGS accuracy analyses found that the certified concentrations of Ga are below the LOD in CRM 1 and CRM 2, at 0.0014 wt. % and 0.00105 wt. %, respectively, and above the LOD in CRM 3, at 0.0064 wt. %. In each of the wells with undefined (NaN) R^2 values, the XRF-measured concentrations of Ga for all three CRMs are consistently 0 for all tests. In general, for each of the wells with low R^2 values (<0.5), the XRF-measured concentrations of Ga are 0, except for one data point for CRM 3, which has a measured concentration above the LOD but below the certified value (average [Ga] in CRM 3 for these wells is 0.002811 wt. %). This is true of nearly all wells with low R^2 values, except one, which has non-zero (above the LOD and below the certified value) values for three of the measurements for CRM 3. For nearly all of the wells with high R^2 values, the XRF-measured concentrations of Ga in analyses of CRM 1 were consistently 0 (below the LOD), with three exceptions. In each of these three wells, there is one anomalous, non-zero measurement of the concentration of Ga in CRM 1: 0.000641 wt. % in 100/16-27-045-26W4/00, 0.000642 wt. % in 100/13-10-047-20W5/00, and 0.000801 wt. % in 100/13-31-009-22W4/00. These values are all below the LOD and the certified concentration of Ga in CRM 1. These observations suggest that Ga is underestimated in measurements of CRM 3 in wells with undefined or low R^2 values, and overestimated in many, but not all, of the measurements of CRM 1 and CRM 2 in wells with high R^2 values; users are advised to refer to the Spectrum calibration report to assess the accuracy of results for Ga.

The R^2 values for Co are below 0.5 in most cores (28 out of 40) and between 0.5 and 0.8 in 12 cores, suggesting a moderate to weak relationship between the measured concentrations of this element and its lab-reported values in the CRMs.

According to the calibration report provided by Spectrum, the calibrated XRF concentrations of Co show good agreement with the concentrations of Co in their in-house standards, with a R^2 value of 0.9835. The estimated LOD was 0.0031 wt. % and the average error was 0.0072 wt. %, with a maximum error of 0.0241 wt. %. The certified concentrations of Co are below the LOD in all three AGS CRMs: [Co] in CRM 1 is 0.00056 wt. %, and [Co] in CRM 2 is 0.000426 wt. %, and [Co] in CRM 3 is 0.000158 wt. %. The Spectrum calibration report should take precedence over the AGS accuracy analyses when assessing the results for Co.

The R^2 values for V, Se, and Ag are either less than 0.5 (V: 31 cores, Se: 10 cores, Ag: 20 cores) or null (V: nine cores, Se: 30 cores, Ag: 20 cores: ), suggesting a weak to undefined relationship between the measured concentrations of these elements and their lab-reported values in the CRMs.

According to the calibration report provided by Spectrum, the calibrated XRF concentrations of V show good agreement with the concentrations of V in their in-house standards, with an R^2 value of 0.9322. The estimated LOD was 0.0331 wt. % and the average error was 0.0053 wt. %, with a maximum error of 0.0166 wt. %. AGS accuracy analyses found generally weak relationships between the XRF-measured concentrations of V and the certified concentrations of V in the AGS-provided, blind-tested CRMs. In each of the cores with undefined (NaN) R^2 values for V, the XRF-measured concentration of V was below the LOD for all measurements of all CRMs. This is as expected, since the certified concentrations of V are near or below the LOD in all CRMs: [V] in CRM 1 is barely over the LOD at 0.0035 wt. % and [V] in CRM 2 and CRM 3 is below the LOD at 0.0023 wt. % and 0.00099 wt. %, respectively.

According to the calibration report provided by Spectrum, the calibrated XRF concentrations of Se show good agreement with the concentrations of Se in their in-house standards, with an R^2 value of 0.998. The estimated LOD was 0.0003 wt. % and the average error was 0.0001 wt. %, with a maximum error of 0.0003 wt. %. AGS accuracy analyses found mostly undefined relationships between the XRF-measured concentrations of Se and the certified concentrations of Se in the AGS-provided, blind-tested CRMs, with R^2 values of NaN for 29 of the 40 wells analyzed. The remaining 11 wells had low correlations, with R2 values less than 0.5. This is as expected, since the certified concentrations of Se are below the LOD in two CRMs: [Se] in CRM 1 is 0.0001 wt. %, and [Se] in CRM 2 is 0.000089 wt. %. CRM 3 does not have a certified concentration value for Se.

Ag is not reported in the calibration report provided by Spectrum, so the correlation of the calibrated XRF concentrations of Ag with the concentrations of Ag in Spectrum’s in-house standards is unknown. Likewise, there are no values available for the LOD, average error, or maximum error associated with Ag. AGS accuracy analyses found that the correlations between the XRF-measured concentrations of Ag and the certified concentrations of Ag in the AGS-provided, blind-tested CRMs are evenly split between low correlations and undefined correlations, with R^2 values of less than 0.5 for 20 of the 40 wells analyzed, and undefined R^2 values for the other 20 wells. The certified concentration of Ag is below the LOD in CRM 2, at 0.0000043 wt. %, and CRM 1 and CRM 3 do not have certified concentration values for Ag.

The three AGS-provided CRMs are not necessarily suitable to assess the measurement accuracy of these three elements; users are advised to refer to the Spectrum calibration report to assess the accuracy of results for V and Se, and to exercise discretion when interpreting the results for Ag.

The R^2 values for Sb are less than 0.5 in 38 out of 40 cores, between 0.5 and 0.8 in one core, and null in one core, suggesting a mostly weak relationship between the measured concentrations of this element and its lab-reported values in the CRMs.

Sb is not reported in the calibration report provided by Spectrum, so the correlation of the calibrated XRF concentrations of Sb with the concentrations of Sb in Spectrum’s in-house standards is unknown. Likewise, there are no values available for the LOD, average error, or maximum error associated with Sb. Although the LOD and errors on the measurements are unknown, the very low certified concentrations of Sb in all three AGS-provided CRMs (0.00003 wt. % in CRM 1, 0.0000083 wt. % in CRM 2, and 0.000316 wt. % in CRM 3)could significantly decrease the accuracy and precision of measurements of this element in the CRMs, thereby decreasing the confidence with which we can use the CRMs for error analyses and interpretations. Users are advised to exercise discretion when interpreting results for Sb.

The R^2 values for P, Cd, and Bi are less than 0.5 in all 40 cores analyzed, suggesting a consistently weak relationship between the measured concentrations of these elements and their lab-reported values in the CRMs.

According to the calibration report provided by Spectrum, the calibrated XRF concentration of P showed good agreement with the concentration of P in their in-house standards, with a R^2 value of 0.9923. The estimated limit of detection (LOD) was 0.0194 and the average error was 0.0185 wt. %, with a maximum error of 0.0567 wt. %. It should be noted that the certified concentration of P in CRM 1 is below the LOD, at 0.013 wt. %, and that the certified concentrations of P in CRM 2 and CRM 3 are only marginally higher than the LOD, at 0.033 wt. % and 0.0261 wt. %, respectively. Thus, it is inferred that the poor AGS-determined accuracy results for P can be attributed to the very low concentrations of P in these CRMs, as errors increase with decreasing analyte concentration. Since the concentrations of P in the AGS CRMs are so low, the AGS-determined accuracy may not be an effective metric of the true accuracy of P measurements in this dataset; as a relatively light element, the low atomic number of P could have an effect as well. There is a high level of Spectrum-determined accuracy for P; users are advised to evaluate P by this metric.

Cd is not reported in the calibration report provided by Spectrum, so the correlation of the calibrated XRF concentrations of Cd with the concentrations of Cd in Spectrum’s in-house standards is unknown. Likewise, there are no values available for the LOD, average error, or maximum error associated with Cd. AGS accuracy analyses found no correlation between the XRF-measured concentrations of Cd and the certified concentrations of Cd in the AGS-provided, blind-tested CRMs, as all wells had R^2 values of 0. There are no certified concentration values available for Cd in CRM 1, CRM 2, or CRM 3, so it is not possible to assess the accuracy of pXRF results for Cd based on these CRMs; users are advised to exercise discretion when interpreting results for Cd.

Bi is not reported in the calibration report provided by Spectrum, so the correlation of the calibrated XRF concentrations of Bi with the concentrations of Bi in Spectrum’s in-house standards is unknown. Likewise, there are no values available for the LOD, average error, or maximum error associated with Bi. AGS accuracy analyses found mostly low correlations between the XRF-measured concentrations of Bi and the certified concentrations of Bi in the AGS-provided, blind-tested CRMs, with R^2 values consistently less than 0.2 for all 40 wells analyzed. There is no certified concentration value available for Bi in CRM 1. The certified concentrations of Bi are very low in CRM 2 (0.0000037 wt. %) and CRM 3 (0.0000652 wt. %). The XRF-measured concentrations of Bi were 0 wt. % in all analyses of CRM 1 and nearly all analyses of CRM 2, except for one data point for CRM 2 collected during analysis of the well 100/14-22-38-17W4/00, which had a Bi concentration of 0.00203 wt. %. This concentration is orders of magnitude greater than the certified concentration of Bi in CRM 2. The XRF-measured concentrations of Bi in tests of CRM 3 are orders of magnitude greater than the certified value, indicating that Bi is significantly overestimated in XRF measurements of CRM 3. Given the lack of calibration data and unknown LOD value for this element, the extremely low concentrations of Bi in CRM 2 and CRM 3, and the fact that there is no certified value for the concentration of Bi in CRM 1, the three AGS-provided CRMs are not necessarily suitable to assess the measurement accuracy of Bi; users are advised to exercise discretion when interpreting results for Bi.

The R^2 values for Cl are null in all 40 cores analyzed, suggesting an undefined relationship between the measured concentrations of this element and its lab-reported values in the CRMs.

According to the calibration report provided by Spectrum, the calibrated XRF concentrations of Cl show good agreement with the concentrations of Cl in their in-house standards, with an R^2 value of 0.9999. The estimated LOD was 0.1386 wt. % and the average error was 0.1479 wt. %, with a maximum error of 1.1148 wt. %. The three AGS-provided CRMs are not necessarily suitable to assess the measurement accuracy of Cl: of the three CRMs provided, only one (CRM 1) has a certified concentration value for Cl: 0.0032 wt. %, which is below the LOD. Indeed, the results from Spectrum show Cl values of 0 wt. % for all CRM measurements. Users are advised to refer to the Spectrum calibration report to assess the accuracy of results for Cl.

All pXRF measurements were conducted on intact coal core surfaces with no sample preparation, which could introduce matrix effects on pXRF results due to variable lithology and core condition.

Spatial_Data_Organization_Information:

Spatial_Reference_Information:

Entity_and_Attribute_Information: Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type: Coal Core List

Entity_Type_Label: DIG 2025-0007 Coal Core pXRF List

Entity_Type_Definition: List of the 40 coal cores analyzed by portable X-ray fluorescence (pXRF) in this study, including identifiers, geospatial coordinates, top and base depths, and intersections with various geological units.

Entity_Type_Definition_Source: Alberta Geological Survey

Attribute:

Attribute_Label: UWI

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Unique well identifier based on Dominion Land Survey System location, formatted as LL-SS-TTT-RRWM where: L = legal subdivision or

quarter section, S = section, T = township, R = range, W = west of, M = meridian; assigned by the AER.

Attribute:

Attribute_Label: Hole_ID

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Identifier associated with borehole; assigned by company. Retrieved from the AGS Mineral Core Research Facility (MCRF) coal core inventory list.

Attribute:

Attribute_Label: Hole_name

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Name associated with borehole; assigned by company. Values of -9999 indicate no hole name recorded. Retrieved from the AGS Mineral Core Research Facility (MCRF) coal core inventory list.

Attribute:

Attribute_Label: CH_#

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Coal hole number. The identifier supplied by the company for its identification of the exploration entity, in this case unlicensed coal holes. Retrieved from the AER's Geological Data Management (GDM) System. Values of -9999 indicate no entry in GDM.

Attribute:

Attribute_Label: EEID

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Exploration Entity ID. Unique identifier automatically calculated and assigned by the AER to exploration entities in Alberta at time of entry into

the AER's Geological Data Management (GDM) System. All exploration entities listed in this publication are unlicensed coal holes.

Attribute:

Attribute_Label: Core_top

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Start depth of cored interval, in original units of measure.

Attribute:

Attribute_Label: Core_base

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: End depth of cored interval, in original units of measure.

Attribute:

Attribute_Label: pXRF_top

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Shallowest depth (first point) of pXRF measurements, in original units of measure.

Attribute:

Attribute_Label: pXRF_base

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Bottom depth (last point) of pXRF measurements, in original units of measure.

Attribute:

Attribute_Label: OUM

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Original units of measurement for depth along borehole. F denotes feet, M denotes metres.

Attribute:

Attribute_Label: Company

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: The company that drilled the borehole and provided the core to the AER.

Attribute:

Attribute_Label: Area

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Geographic area where the borehole is located. Retrieved from the AGS Mineral Core Research Facility (MCRF) coal core inventory list. Values of -9999 indicate blank entries in the MCRF coal inventory list.

Attribute:

Attribute_Label: Lat_NAD83

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Latitude, NAD83 datum, decimal degrees north. Determined by industry surveys at time of drilling and submitted to the AER by the company. Retrieved from the AER's Geological Data Management (GDM) System. Exception: Core Hole 66-1 (UWI: 100/02-25-026-02W5/00; EEID: 9999992) has no entry in GDM; the spatial coordinates for this unlicensed coal hole were estimated by converting the centroid of the DLS location to latitude/longitude.

Attribute:

Attribute_Label: Long_NAD83

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Longitude, NAD83 datum, decimal degrees east. Determined by industry surveys at time of drilling and submitted to the AER by the company. Retrieved from the AER's Geological Data Management (GDM) System. Exception: Core Hole 66-1 (UWI: 100/02-25-026-02W5/00; EEID: 9999992) has no entry in GDM; the spatial coordinates for this unlicensed coal hole were estimated by converting the centroid of the DLS location to latitude/longitude.

Attribute:

Attribute_Label: Elevation

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Ground surface elevation relative to sea level, at the location where the hole was drilled. Values are in original units of measurement for core depth (OUM). Determined by industry surveys at time of drilling and submitted to the AER by the company. Retrieved from the AER's Geological Data Management (GDM) System. Values of -9999 indicate blank fields in GDM (no elevation data available).

Attribute:

Attribute_Label: E_accuracy

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Elevation value accuracy. The degree of accuracy to which elevation has been established. Retrieved from the AER's Geological Data Management

(GDM) System. Values of -9999 indicate blank fields or no entry in GDM (no elevation accuracy estimate available).

Attribute:

Attribute_Label: CMZ

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Alberta 3D coal zone model zones intersected by cored interval. Values of -9999 indicate core is located outside of model area.

Attribute:

Attribute_Label: GFA

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Geological Framework of Alberta (GFA) model zones intersected by cored interval. Values of -9999 indicate core is located outside of GFA area.

Attribute:

Attribute_Label: Strat

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Stratigraphic formations intersected by cored interval, as recorded in reports submitted to the AER. Values of -9999 indicate no stratigraphic unit recorded.

Attribute:

Attribute_Label: Publisher

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Organization that published the dataset.

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type: Coal Compilation of Coal Core pXRF Geochemistry Results

Entity_Type_Label: DIG 2025-0007 Coal Core pXRF Compilation Dataset

Entity_Type_Definition: Compilation of results from portable X-ray fluorescence (pXRF) analyses of all 40 cores analyzed in this study. This dataset comprises geochemical data for all pXRF sample points analyzed, including element concentrations and the errors associated with each measurement.

Entity_Type_Definition_Source: Alberta Geological Survey

Attribute:

Attribute_Label: Instrument

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Model of pXRF instrument used.

Attribute:

Attribute_Label: Setup

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Analytical settings of pXRF during analysis.

Attribute:

Attribute_Label: Date

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Date of measurement.

Attribute:

Attribute_Label: Time

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Time of measurement.

Attribute:

Attribute_Label: UWI

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Unique well identifier based on Dominion Land Survey System location, formatted as LL-SS-TTT-RRWM where: L = legal subdivision or quarter section, S = section, T = township, R = range, W = west of, M = meridian; assigned by the AER.

Attribute:

Attribute_Label: Depth

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Depth of pXRF measurement. Mineral exploration boreholes, with borehole names of various formats depending on the individual company, use depths measured from the ground surface.

Attribute:

Attribute_Label: OUM

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Original unit of depth measurement. F denotes feet, M denotes metres. Certified reference materials (CRMs) do not have associated depths.

Attribute:

Attribute_Label: Type

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Type of pXRF measurement. Sample = spot measurement on coal core. Standard = measurement of certified reference material.

Attribute:

Attribute_Label: Mg_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of magnesium, in weight percent.

Attribute:

Attribute_Label: Mg_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of magnesium concentration, in weight percent.

Attribute:

Attribute_Label: Al_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of aluminum, in weight percent.

Attribute:

Attribute_Label: Al _err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of aluminum concentration, in weight percent.

Attribute:

Attribute_Label: Si_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of silicon, in weight percent.

Attribute:

Attribute_Label: Si_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of silicon concentration, in weight percent.

Attribute:

Attribute_Label: P_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of phosphorus, in weight percent.

Attribute:

Attribute_Label: P_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of phosphorus concentration, in weight percent.

Attribute:

Attribute_Label: S_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of sulphur, in weight percent.

Attribute:

Attribute_Label: S_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of sulphur concentration, in weight percent.

Attribute:

Attribute_Label: Cl_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of chlorine, in weight percent.

Attribute:

Attribute_Label: Cl_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of chlorine concentration, in weight percent.

Attribute:

Attribute_Label: K_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of potassium, in weight percent.

Attribute:

Attribute_Label: K_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of potassium concentration, in weight percent.

Attribute:

Attribute_Label: Ca_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of calcium, in weight percent.

Attribute:

Attribute_Label: Ca_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of calcium concentration, in weight percent.

Attribute:

Attribute_Label: Ti_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of titanium, in weight percent.

Attribute:

Attribute_Label: Ti_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of titanium concentration, in weight percent.

Attribute:

Attribute_Label: V_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of Vanadium, in weight percent.

Attribute:

Attribute_Label: V_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of vanadium concentration, in weight percent.

Attribute:

Attribute_Label: Cr_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of chromium, in weight percent.

Attribute:

Attribute_Label: Cr_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of chromium concentration, in weight percent.

Attribute:

Attribute_Label: Mn_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of manganese, in weight percent.

Attribute:

Attribute_Label: Mn_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of manganese concentration, in weight percent.

Attribute:

Attribute_Label: Fe_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of iron, in weight percent.

Attribute:

Attribute_Label: Fe_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of iron concentration, in weight percent.

Attribute:

Attribute_Label: Co_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of cobalt, in weight percent.

Attribute:

Attribute_Label: Co_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of cobalt concentration, in weight percent.

Attribute:

Attribute_Label: Ni_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of nickel, in weight percent.

Attribute:

Attribute_Label: Ni_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of nickel concentration, in weight percent.

Attribute:

Attribute_Label: Cu_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of copper, in weight percent.

Attribute:

Attribute_Label: Cu_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of copper concentration, in weight percent.

Attribute:

Attribute_Label: Zn_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of zinc, in weight percent.

Attribute:

Attribute_Label: Zn_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of zinc concentration, in weight percent.

Attribute:

Attribute_Label: Ga_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of gallium, in weight percent.

Attribute:

Attribute_Label: Ga_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of gallium concentration, in weight percent.

Attribute:

Attribute_Label: As_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of arsenic, in weight percent.

Attribute:

Attribute_Label: As_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of arsenic concentration, in weight percent.

Attribute:

Attribute_Label: Se_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of selenium, in weight percent.

Attribute:

Attribute_Label: Se_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of selenium concentration, in weight percent.

Attribute:

Attribute_Label: Rb_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of rubidium, in weight percent.

Attribute:

Attribute_Label: Rb_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of rubidium concentration, in weight percent.

Attribute:

Attribute_Label: Sr_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of strontium, in weight percent.

Attribute:

Attribute_Label: Sr_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of strontium concentration, in weight percent.

Attribute:

Attribute_Label: Y_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of yttrium, in weight percent.

Attribute:

Attribute_Label: Y_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of yttrium concentration, in weight percent.

Attribute:

Attribute_Label: Zr_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of zirconium, in weight percent.

Attribute:

Attribute_Label: Zr_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of zirconium concentration, in weight percent.

Attribute:

Attribute_Label: Nb_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of niobium, in weight percent.

Attribute:

Attribute_Label: Nb_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of niobium concentration, in weight percent.

Attribute:

Attribute_Label: Mo_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of molybdenum, in weight percent.

Attribute:

Attribute_Label: Mo_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of molybdenum concentration, in weight percent.

Attribute:

Attribute_Label: Ag_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of silver, in weight percent.

Attribute:

Attribute_Label: Ag_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of silver concentration, in weight percent.

Attribute:

Attribute_Label: Cd_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of cadmium, in weight percent.

Attribute:

Attribute_Label: Cd_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of cadmium concentration, in weight percent.

Attribute:

Attribute_Label: Sn_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of tin, in weight percent.

Attribute:

Attribute_Label: Sn_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of tin concentration, in weight percent.

Attribute:

Attribute_Label: Sb_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of antimony, in weight percent.

Attribute:

Attribute_Label: Sb_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of antimony concentration, in weight percent.

Attribute:

Attribute_Label: Ba_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of barium, in weight percent.

Attribute:

Attribute_Label: Ba_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of barium concentration, in weight percent.

Attribute:

Attribute_Label: La_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of lanthanum, in weight percent.

Attribute:

Attribute_Label: La_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of lanthanum concentration, in weight percent.

Attribute:

Attribute_Label: Ce_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of cerium, in weight percent.

Attribute:

Attribute_Label: Ce_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of cerium concentration, in weight percent.

Attribute:

Attribute_Label: Pr_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of praseodymium, in weight percent.

Attribute:

Attribute_Label: Pr_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of praseodymium concentration, in weight percent.

Attribute:

Attribute_Label: Nd_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of neodymium, in weight percent.

Attribute:

Attribute_Label: Nd_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of neodymium concentration, in weight percent.

Attribute:

Attribute_Label: W_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of tungsten, in weight percent.

Attribute:

Attribute_Label: W_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of tungsten concentration, in weight percent.

Attribute:

Attribute_Label: Hg_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of mercury, in weight percent.

Attribute:

Attribute_Label: Hg_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of mercury concentration, in weight percent.

Attribute:

Attribute_Label: Pb_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of lead, in weight percent.

Attribute:

Attribute_Label: Pb_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of lead concentration, in weight percent.

Attribute:

Attribute_Label: Bi_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of bismuth, in weight percent.

Attribute:

Attribute_Label: Bi_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of bismuth concentration, in weight percent.

Attribute:

Attribute_Label: Th_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of thorium, in weight percent.

Attribute:

Attribute_Label: Th_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of thorium concentration, in weight percent.

Attribute:

Attribute_Label: U_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Measured concentration of uranium, in weight percent.

Attribute:

Attribute_Label: U_err

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Error on measurement of uranium concentration, in weight percent.

Attribute:

Attribute_Label: LE_pct

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Light elements, approximated by a calculation of the light elements that the XRF instrument cannot measure; generally, elements lighter than sodium or magnesium.

Attribute:

Attribute_Label: GR_API

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Chemical gamma, calculated based on the elemental concentrations of potassium, uranium, and thorium.

Attribute:

Attribute_Label: Vendor

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: The company that analyzed the core and produced the dataset.

Attribute:

Attribute_Label: Publisher

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Organization that published the dataset.

  Distribution_Information:

    Distributor:

      Contact_Information:

        Contact_Organization_Primary:

          Contact_Organization: Alberta Geological Survey

          Contact_Person: AGS Information Manager

        Contact_Position: AGS Information Manager

        Contact_Address:

          Address_Type: mailing and physical

          Address: Alberta Energy Regulator

          Address: 2nd Floor, Twin Atria Building

          Address: 4999-98 Avenue NW

          City: Edmonton

          State_or_Province: Alberta

          Postal_Code: T6B 2X3

          Country: Canada

        Contact_Voice_Telephone: (780) 638-4491

        Contact_Facsimile_Telephone: (780) 422-1459

        Contact_Electronic_Mail_Address: AGS-Info@aer.ca

        Hours_of_Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

Distribution_Liability: The Alberta Energy Regulator / Alberta Geological Survey (AER/AGS) licenses this information under the Open Government License - Alberta. Any references to proprietary software in our documentation, and/or any use of proprietary data formats in our releases, do not constitute endorsement by the AER/AGS of any manufacturer's product.

  Metadata_Reference_Information:

    Metadata_Date: 20250821

    Metadata_Contact:

      Contact_Information:

        Contact_Organization_Primary:

          Contact_Organization: Alberta Geological Survey

          Contact_Person: AGS Information Manager

        Contact_Position: AGS Information Manager

        Contact_Address:

          Address_Type: mailing and physical

          Address: Alberta Energy Regulator

          Address: 2nd Floor, Twin Atria Building

          Address: 4999-98 Avenue NW

          City: Edmonton

          State_or_Province: Alberta

          Postal_Code: T6B 2X3

          Country: Canada

        Contact_Voice_Telephone: (780) 638-4491

        Contact_Facsimile_Telephone: (780) 422-1459

        Contact_Electronic_Mail_Address: AGS-Info@aer.ca

        Hours_of_Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

    Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

    Metadata_Standard_Version: FGDC-STD-001-1998

    Metadata_Time_Convention: local time

    Metadata_Access_Constraints: none

    Metadata_Use_Constraints: none