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22196 - Calcite Geode with Gypsum Crystal 680 g in Natural Matrix Sphenopteris Precious tooth of Eremiasaurus heterodontus

USD85.50 USD106.50
SKU 73201636648 4.4

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Studio notes

Clay brief
Description

Precious tooth of Eremiasaurus heterodontus (Mosasaur) from the phosphate deposits of the Ouled Abdoun Basin (Morocco)

Meitanillaenus

Petrography: The meteorite displays a fine-grained

†Acanthoceras sp

Otarion diffractum

22196 - Calcite Geode with Gypsum Crystal 680 g in Natural Matrix Sphenopteris Precious tooth of Eremiasaurus heterodontusSIZE: 142. 6 mm 5. 61 in WEIGHT: 680 g Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 C and vaterite is even less stable. Gypsum is a

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