A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Hornblende andesite, Mt. Shasta, Siskiyou County, California |
|---|---|
| Description | This andesite is an extrusive igneous rock with black hornblende crystals in a light-gray groundmass. The fine grained matrix is composed of plagioclase micro-crystals, very small prisms of clinopyroxene and dots of magnetite. This sample is about 10 cm across. |
| Chronostratigraphy | Late Tertiary |
| Location | USA ▹ California ▹ Siskiyou. Mt. Shasta. |
| Photographer | Twyla Baker. 2001-02-15. |
| Collection | Ward’s Collection of Classic North American Rocks #27. |
| Key words | hornblende andesite, hornblende, andesite, California |
| Tech details | 1.07 MB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 91 |
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