Title | Tremolite |
Description | Tremolite, Ca2Mg5Si8O22(OH)2 (calcium magnesium silicate hydroxide), is a common mineral in some metamorphic rocks. It is a member of the amphibole group and typically occurs when a sandy limestone or dolostone is metamorphosed. Tremolite, like other amphibole minerals, has good cleavage. It may break into splintery fragments such as the 14 cm long fragment shown here. |
Location | USA ▹ Montana ▹ Madison County |
Photographer | Darla Sondrol. 2001-07-03. |
Collection | University of North Dakota Mineralogy Collection. |
Key words | tremolite, amphibole, Montana |
Tech details | 105 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
GeoDIL number | 1017 |
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