| Title | Hornblende granite, Rockport, Massachusetts |
| Description | This is a typical sample of granite; it contains quartz and K-feldspar with lesser amounts of black biotite and black hornblende. The specimen is is 9.5 cm across. |
| Location | USA ▹ Massachusetts. Near Rockport. |
| Photographer | Mike Davis. 2001-04-24. |
| Collection | Ward’s Collection of Classic North American Rocks #102. |
| Key words | hornbelnde, granite, Massachusetts |
| Tech details | 921 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 373 |
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