A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Cummingtonite |
|---|---|
| Description | Cummingtonite is an amphibole. It has the chemical formula of (Mg,Fe)7Si8O22(OH)2. Cummingtonite and anthophyllite are polymorphs. It is named after its locality, which is Cummingtonite, Mass. This sample is about 6 cm. |
| Location | USA ▹ South Dakota. Near Leeds. Homestake Mine. |
| Photographer | Shannon Heinle. 2001-11-08. |
| Collection | University of North Dakota Mineralogy Collection #1401. |
| Key words | cummingtonite, amphibole |
| Tech details | 431 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera. |
| GeoDIL number | 1783 |
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