Andradite

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An isometric mineral, 8[Ca3 Fe2 Si3 O12 ] ; never pure; garnet group; in yellow, green, red, brown, or black dodecahedral and trapezohedral crystals, or may be massive; in calcareous metasediments and placers. Varieties include topazolite, demantoid, melanite, aplome, and bredbergite.
Source: Dictionary of Mining, Mineral, and Related Terms


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