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Photomicrographs of dacite vitrophyre. Skamania County, Washington. 1980.

Dates

Date Taken
1980

Summary

Album caption: Photomicrographs of dacite vitrophyre. Plane polarized light; top edge of each published photomicrograph is 1.0 mm. B. Sample JDF-6-29-80-2. Pyroxene and plagioclase microlites strewn through a glassy matrix. The remainder of the section consists of vesicles (V) and orthopyroxene (O), plagioclase (P), and opaque oxide (black) phenocrysts. Skamania County, Washington. June 29, 1980. (Identification on published photo only) (Photo by J.D. Friedman) Portion published as figure 311-B in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Friedman, Jules D.

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msh_1250_00116.jpg thumbnail 966.59 KB image/jpeg
msh_1250_00116.tif 9.64 MB image/geotiff

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Available in the U.S. Geological Survey Denver Library Photographic Collection, Mount St. Helens Collection.

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Identifiers

Type Scheme Key
name photoLibrary msh_1250_00116
number photoLibrary 26997
batch photoLibrary btch141
number_in_book photoLibrary 116

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