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    • Oxide and Cation Compositions of Pyroxene Grains from Drill Core of the Duluth Complex, Minnesota

    Metadata Updated: July 6, 2024

    The table contains oxide and cation compositions of pyroxene grains from drill core in the Duluth Complex. The oxides were determined by electron probe microanalysis (EPMA) and are reported in weight percent (we%). The cations were calculated from the oxide concentrations and are reported in mole percent (mol%). Pyroxene minerals are a group of rock-forming inosilicate minerals with calcium (Ca), iron (Fe), and magnesium (Mg) endmembers. Wollastonite (Wo) is the Ca-endmember with the formula Ca2Si2O6. Ferrosilite (Fs) is the Fe-endmember with the formula Fe2Si2O6, and enstatite (En) is the Mg-endmember with the formula Mg2Si2O6. In order to better understand the chemical compositions of the pyroxenes, the percent of Wo, Fs, and En were also determined using the cation compositions Ca, Fe, and Mg.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Created Date June 1, 2023
    Metadata Updated Date July 6, 2024

    Metadata Source

    Harvested from DOI EDI

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 1, 2023
    Metadata Updated Date July 6, 2024
    Publisher U.S. Geological Survey
    Maintainer
    @Id http://datainventory.doi.gov/id/dataset/39d676bc140a64509c6e78e85e4c0c1d
    Identifier USGS:59dcd057e4b05fe04ccbd536
    Data Last Modified 20200821
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://datainventory.doi.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 945b5224-c34f-4d8e-8976-fa76d2c48727
    Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
    Harvest Source Title DOI EDI
    Metadata Type geospatial
    Old Spatial -92.936096188011,46.50595444409,-89.81597900064,48.202710287247
    Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
    Source Datajson Identifier True
    Source Hash 4881c5214219050129172563bbfbdbe44ae21f873282d41f991e74529913acfb
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -92.936096188011, 46.50595444409, -92.936096188011, 48.202710287247, -89.81597900064, 48.202710287247, -89.81597900064, 46.50595444409, -92.936096188011, 46.50595444409}

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