| Title | Gillespite and san bornite |
| Description | Gillespite is a phyllosilicate or a layered silicate witht the chemical formula BaFe++Si4O10. A notable locality it is found in is the Dry Delta, Alaska Range, Alaska, USA. This speciman is approximately 5 cm. |
| Location | USA ▹ California ▹ Mariposa |
| Photographer | Shannon Heinle. 2002-01-22. |
| Collection | University of North Dakota Mineralogy Collection #1290. |
| Key words | gillespite, san bornite, silicate |
| Tech details | 379 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera. |
| GeoDIL number | 2169 |
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