A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Rhyolite tuff, Frying Pan Basin, Beaverhead County, Montana |
|---|---|
| Description | This specimen is medium brown with scattered phenocrysts of glassy quartz and feldspar in a quartz-sanidine groundmass with scattered vesicles. It has a uniform texture consisting of 70-80% glass shards, a small percentage show marginal devitrification in thin section. |
| Chronostratigraphy | Early Tertiary |
| Location | USA ▹ Montana ▹ Beaverhead. Frying Pan Basin. |
| Photographer | Joseph Hartman. 2001-02-13. |
| Collection | Ward’s Collection of Classic North American Rocks #10. |
| Key words | rhyolite, tuff, Montana |
| Tech details | 869 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 51 |
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