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Rock and Mineral Dictionary |
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ultramafic Ultramafic rocks are a type of igneous rock that are composed mostly of the mafic minerals: hypersthene, augite, and/or olivine. |
unakite Unakite is an opaque mineral that is green with patches of red and pink. Unakite is a variety of granite that contains green epidote and pink feldspar (but lacks mica). It has a hardness of 6 to 7 and a specific gravity of 2.86 - 3.2. Unakite was named for the Unaka Mountains Mountains in Tennessee, USA. Unakite is found in the USA and Africa. |
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Rock and Mineral Dictionary |
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