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#1 Federal

Coking coal of the United States: Modern and historical locations of coking coal mining locations and chemical, rheological, petrographic, and other data from modern samples

Organization: Department of the Interior
Dataset Last Updated: September 30, 2020 at 12:00 AM

For the open-file report we collected new coking coal samples from Alabama, Kentucky, Oklahoma and Arkansas and analyzed them for proximate and ultimate analyses; calorific value; sulfur forms;...

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Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 05:01 AM

#2 Federal

Reflectance data from figures in: Using X-ray spectrum of carbon in electron microprobe analysis to determine thermal maturity of organic matter in mudstones

Organization: Department of the Interior
Dataset Last Updated: January 21, 2026 at 12:00 AM

Conventional methods of assessing organic matter (OM) thermal maturity have limitations and often fail to reflect the geochemical heterogeneity between individual organic phases in mudstone...

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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 01, 2026 at 03:35 AM

#3 Federal

Data release for mean random reflectance for products of hydrous pyrolysis experiments on artificial rock mixtures of humic Wyodak-Anderson coal (2018)

Organization: Department of the Interior
Dataset Last Updated: August 19, 2020 at 12:00 AM

Mean random vitrinite reflectance (Ro) is the most widely accepted method to determine thermal maturity of coal and other sedimentary rocks. However, oil-immersion Ro of polished rock or kerogen...

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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 01, 2026 at 04:33 AM

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Coking coal of the United States: Modern and historical locations of coking coal mining locations and chemical, rheological, petrographic, and other data from modern samples

Reflectance data from figures in: Using X-ray spectrum of carbon in electron microprobe analysis to determine thermal maturity of organic matter in mudstones

Data release for mean random reflectance for products of hydrous pyrolysis experiments on artificial rock mixtures of humic Wyodak-Anderson coal (2018)