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polished surface reflecting the richness of the island’s mineral diversity
- Type: Galena in quartz (a type of sulfide mineralization)
Location: Chihuahua
- What it is: Ammonite
Aragonite polished surface reflecting the richnessSize: 3 x 2 x 2 cms (Avg) Weight: 30 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.
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