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A Geoscience Digital Image Library

1017.jpg
TitleTremolite
DescriptionTremolite, 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.
LocationUSA ▹ Montana ▹ Madison County
PhotographerDarla Sondrol. 2001-07-03.
CollectionUniversity of North Dakota Mineralogy Collection.
Key wordstremolite, amphibole, Montana
Tech details105 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number1017