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