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Photomicrographs of sheared quartz, North Star mine. Nevada County, California. 1931.

Dates

Date Taken
1931

Summary

Photomicrographs of sheared quartz: irregular granulation with development of mortar structure. North Star mine No. 2 vein, 8,200-foot level. Crossed nicols. Nevada County, California. 1931. Plate 19-C, U.S.Geological Survey Professional paper 194. 1940.

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Additional Information

Identifiers

Type Scheme Key
name photoLibrary jwdj0313
number photoLibrary 20017
batch photoLibrary btch294
number_in_book photoLibrary 313

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