01 n. A mineral of a brown to black color occurring in prismatic crystals, often twinned so as to form groups resembling a cross. It is a silica…
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A mineral of a brown to black color occurring in prismatic crystals, often twinned so as to form groups resembling a cross. It is a silicate of alumina and iron, and is generally found imbedded in mica schist. Called also granatite, and grenatite.(Min.) Also: granatite, grenatite