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Isotopic ratios and element concentrations of U-Pb and Sm-Nd for scheelite petrochronology

Dates

Publication Date
Start Date
2015-02-06
End Date
2019-09-13

Citation

Wintzer, N.E., Schmitz, M.D., Gillerman, V.S., and Vervoort, J.D., 2020, Isotopic ratios and element concentrations of U-Pb and Sm-Nd for scheelite petrochronology: U.S. Geological Survey data release, https://doi.org/10.5066/P9QH5ZYP.

Summary

Instrument, standard, and sample data from application of in situ laser ablation-inductively coupled plasma-mass spectrometry (LA-ICPMS) dating of scheelite in thin section, and sample data from isotope dilution thermal ionization mass spectrometry (ID-TIMS) scheelite dating are in this data release. Fractionation factor and ratio data in between NIST glass and natural scheelite as well as isotope dilution Sm-Nd scheelite data are also included. Scheelite is from two ore deposits within the Stibnite-Yellow Pine mining area, and analyses yielded bimodal U-Pb ages with major growth of scheelite in the range of 61.3 ± 4.1 to 55.1 ± 3.8 Ma and a second growth event involving both scheelite and stibnite at 45.8 ± 2.6 Ma. In situ analyses [...]

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Attached Files

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Sm-Nd Scheelite Data Summary.csv
“Sm-Nd Scheelite Data Summary”
543 Bytes
U-Pb Scheelite Ages Summary.csv
“U-Pb Scheelite Ages Summary”
1.67 KB
U-Pb Scheelite Fractionation Factor Data.csv
“U-Pb Scheelite Fractionation Factor Data”
122.89 KB
U-Pb Scheelite Fractionation Factor Ratios.csv
“U-Pb Scheelite Fractionation Factor Ratios”
833 Bytes
U-Pb Scheelite ICPMS Instrument Data.csv
“U-Pb Scheelite ICPMS Instrument Data”
3.02 KB
U-Pb Scheelite ICPMS Sample Data.csv
“U-Pb Scheelite ICPMS Sample Data”
90.38 KB
U-Pb Scheelite ICPMS Standard Data.csv
“U-Pb Scheelite ICPMS Standard Data”
43.82 KB
U-Pb Scheelite TIMS Sample Data.csv
“U-Pb Scheelite TIMS Sample Data”
8.09 KB
Scheelite Geochronology Data Dictionary.csv
“Scheelite Geochronology Data Dictionary”
23.12 KB

Purpose

These data provide age constraints for scheelite and some stibnite mineralization in the Yellow Pine mining area (Stibnite district), which were previously debated about in geologic literature but had no reliable numerical age. They also provide independent verification of a new natural scheelite standard for laser ablation U-Pb scheelite geochronology.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9QH5ZYP

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