A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Trachyte porphyry, Bannockburn Township, Ontario, Canada |
|---|---|
| Description | This sample contains large K-feldspar phenocrysts. The groundmass is mostly plagioclase and biotite. This specimen 8 cm across. |
| Location | Canada ▹ Ontario ▹ Bannockburn Township |
| Photographer | Mike Davis. 2001-04-24. |
| Collection | Ward’s Collection of Classic North American Rocks #112. |
| Key words | trachyte, porphyry, Ontario, Canada |
| Tech details | 592 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 378 |
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