Hornblende-biotite granite from USA
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Erik Vercammen field observation and specimen |
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Erik Vercammen field observation and specimen |
Sequoia National Park, Tulare County, California, USA