Photomicrograph of gabbro along Beaver Creek. Clearwater County, Idaho. circa 1957.

Dates

Date Taken

1957

Summary

Album caption: Photomicrograph of gabbro along Beaver Creek. The main dark constituents are pyroxene (A) and hornblend (ho). Biotite (Bi) and magnetite (black) occur in small quantities. Plane-polarized light. Clearwater county, Idaho. c 1957. Published as figure 9C in U.S. Geological Survey. Professional paper 344-D. 1963.

Summary

Album caption: Photomicrograph of gabbro along Beaver Creek.  The main dark constituents are pyroxene (A) and hornblend (ho).  Biotite (Bi) and magnetite (black) occur in small quantities.  Plane-polarized light.  Clearwater county, Idaho.  c 1957.

Published as figure 9C in U.S. Geological Survey.  Professional paper 344-D.  1963.

 

Contacts

Data Owner :

U.S. Geological Survey

Photographer :

Hietanen, Anna Martta

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ham00013.jpg		1.29 MB	image/jpeg
ham00013.tif		14.13 MB	image/geotiff

Related External Resources

Type: Web Link

Web Link

https://doi.org/10.3133/pp344D

Material Request Instructions

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

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• Clearwater County, Idaho

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