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A polished hand specimen of diopside-plagioclase gneiss with irregular areas rich in hornblende (dark). Clearwater County, Idaho. circa 1950.

Dates

Date Taken
1950

Summary

Album caption: A polished hand specimen of diopside-plagioclase gneiss with irregular areas rich in hornblende (dark). Crawford mine. Clearwater County, Idaho. c. 1950. Published as figure 13 in U.S. Geological Survey. Professional paper 344-A. 1962.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Hietanen, Anna Martta

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ham00066.jpg thumbnail 667.07 KB image/jpeg
ham00066.tif 15.75 MB image/geotiff

Material Request Instructions

Available in the U.S. Geological Survey Denver Library Photographic Collection, Hietanen, A.M. Collection.

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