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Carbon and oxygen isotope composition, geochemistry, and petrography of carbonate minerals in the Mountain Pass carbonatite (ver. 1.1, February 2026)

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 05:21 AM | Dataset Last Updated: February 11, 2026 at 12:00 AM
This data release contains in situ carbon and oxygen isotope analyses of calcite and dolomite collected via secondary ion mass spectrometry (SIMS), as well as major and trace element geochemical data, bulk mineral carbon and oxygen isotope data, and whole rock geochemistry for the samples included in this study. Also included are images from analyzed thin sections that show the sample locations in backscattered electron (BSE), hyperspectral cathodoluminescence (CL) and element maps.

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