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- Gypsum: Monoclinic
AND CONSTRUCTION
curved break patterns)
translucent colors green
Calcite crystals often exhibit a remarkable optical property called double refraction
Aragonite - Gypsum: MonoclinicSize: 4 x 3 x 3 cms (Avg) Weight: 50 grams (Avg) Location: USA Product Description: Aragonite is a mineral composed of calcium carbonate (CaCO3) with an orthorhombic crystal system. It forms in sedimentary environments, such as in shells and skeletons of marine organisms, and in hydrothermal veins. Aragonite has a hardness of 3. 5 4 on the Mohs scale and exhibits a distinctive crystal shape.
