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  4. Sulfide Electron Microprobe Analyses and Petrography of Mineralized Samples from the Stratabound Sheep Creek Sediment-Hosted Zn-Pb-Ag-Sn Prospect, and SHRIMP U–Pb Zircon Data for Metaigneous Rocks in the Bonnifield Mining District, Healy Quadrangle, Alaska

Sulfide Electron Microprobe Analyses and Petrography of Mineralized Samples from the Stratabound Sheep Creek Sediment-Hosted Zn-Pb-Ag-Sn Prospect, and SHRIMP U–Pb Zircon Data for Metaigneous Rocks in the Bonnifield Mining District, Healy Quadrangle, Alaska

Dates

Publication Date
Start Date
1997
End Date
2005

Citation

Dusel-Bacon, C., Aleinikoff, J.N., Paradis, S., Slack, J.F., 2023, Sulfide electron microprobe analyses and petrography of mineralized samples from the stratabound Sheep Creek sediment-hosted Zn-Pb-Ag-Sn prospect, and SHRIMP U–Pb zircon data for metaigneous rocks in the Bonnifield mining district, Healy quadrangle, Alaska: U.S. Geological Survey data release, https://doi.org/10.5066/P9654N1C.

Summary

This dataset contains 99 electron microprobe analyses of cassiterite, chalcopyrite, galena, pyrite, sphalerite, and tetrahedrite from seven Sheep Creek drill core samples and one outcrop; and a table that describes the textures, mineralogy, and rock type of 15 thin sections of Sheep Creek drill core and observations from our study and from drill core logging by industry. These data were used to compare this prospect with others in the Bonnifield district. The dataset also contains tables of sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon dates, zircon characteristics (crystal shape, external morphology, internal features, color, aspect ratio, and cathodoluminescence zoning), and 139 U-Th-Pb analyses of the zircons from [...]

Contacts

Point of Contact :
Alaska Science Center
Originator :
Cynthia Dusel-Bacon, John N Aleinikoff, Suzanne Paradis, John F Slack
Metadata Contact :
Alaska Science Center
Publisher :
Alaska Science Center
Distributor :
USGS ScienceBase Team
USGS Mission Area :
Energy and Minerals
SDC Data Owner :
Alaska Science Center

Attached Files

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geoChron_microprobe_U-Pb-zircon_bonnifield-sheepCreek_dusel-bacon_metadata.xml
Original FGDC Metadata
View 		49.21 KB application/fgdc+xml
dataDictionary_bonnifield-sheepCreek.csv 7.15 KB text/csv
electronMicroprobeAnalyses_sheepCreek.csv 9.04 KB text/csv
Supplemental_Information_Analytical_Methods_Electron_Microprobe_U-Pb_Geochronology.pdf 81.64 KB application/pdf
thinSections_sheepCreek.csv 6.09 KB text/csv
U-Pb_sampleAgeLocationDescription_bonnifield.csv 4.15 KB text/csv
U-Pb-zircon_bonnifield.csv 12.43 KB text/csv
geoChron_microprobe_U-Pb-zircon_bonnifield-sheepCreek_dusel-bacon_metadata.html 107.7 KB text/html

Purpose

We performed electron microprobe analysis of zinc, lead, silver, and tin and conducted petrographic analysis of thin sections from drill core from 1977 drilling of the Sheep Creek prospect in the Bonnifield mining district to characterize an important massive sulfide occurrence in the Bonnifield mining district, Alaska. These data were compared with comparable mineral chemistry data from massive sulfide deposits elsewhere in the Bonnifield mining district to evaluate the origins of the different deposits. Sensitive high-resolution ion microprobe (SHRIMP) U-Pb geochronology of felsic metaigneous rocks was conducted to determine their ages to help define the age relationships of the regional stratigraphy in the Bonnifield mining district. U-Pb zircon in-situ ion probe geochronology also was used to date the metavolcanic rocks that host massive sulfide mineralization in most of the Bonnifield mining districts and the associated metasedimentary rocks that we propose are the host rocks for the metasedimentary exhalative (Sedex) massive sulfides at the Sheep Creek prospect.

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  • Alaska Science Center (ASC)

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9654N1C

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