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Bleached porphyry of Hahns Peak. Routt County, Colorado. 1972.

Dates

Date Taken
1972

Summary

Album caption: Bleached porphyry of Hahns Peak. Dark quartz andesite porphyry dike rock. Routt County, Colorado. 1972. (Specimen) Published as figure 6 in U. S. Geological Survey. Bulletin 1367. 1973.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Young, Edward Joseph

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yej00022.jpg thumbnail 484.3 KB image/jpeg
yej00022.tif 9.64 MB image/geotiff

Material Request Instructions

Available in the U.S. Geological Survey Denver Library Photographic Collection, Young, E. J. Collection.

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