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Tetrahedrite replaced by hessite. Tetraedrite hessite; gangue is quartz, Durango Girl mine. La Plata County, Colorado. 1936.

Dates

Date Taken
1936

Summary

Photomicrograph of polished sections of ore: Tetrahedrite replaced by hessite. Tetraedrite hessite; gangue is quartz; reflected light enlarged 60 x. Durango Girl mine. Photo by F.W. Galbraith. La Plata County, Colorado. Circa 1936. Plate 10-B, in U.S.Geological Survey Professional paper 219. 1949.

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Data Owner :
U.S. Geological Survey

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eeb00089.jpg thumbnail 5.74 MB image/jpeg

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This USGS product is considered to be in the U.S. public domain. For further information on the USGS Information Policies and Instructions, refer to the Copyrights and Credits section on this web page: http://www.usgs.gov/laws/info_policies.html
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Identifiers

Type Scheme Key
name photoLibrary eeb00089
number photoLibrary 9665
batch photoLibrary btch295
number_in_book photoLibrary 89

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