A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Thin section of hornblende andesite |
|---|---|
| Description | This is a plain polarized thin section of hornblende andesite. Abundant oscillatory-zoned plagioclase with glomeroporphritic amphibole set in a fine-grained, plagioclase-rich groundmass. Amphiboles show dark reaction rims. Minor amounts of unaltered augite are present. Magnetite is an accessory. |
| Chronostratigraphy | Triassic |
| Geologic province | Excelsior |
| Location | USA ▹ Nevada ▹ Mineral |
| Photographer | Darla Sondrol. 2002-04-09. |
| Collection | Ward’s Collection of Classic North American Rocks #27. |
| Key words | hornblende andesite, hornblende, andesite, California, thin section |
| Tech details | 2.98 MB. Thin section. Nikon FDX-35. |
| GeoDIL number | 2633 |
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