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22196 - Calcite Geode with Gypsum Crystal 680 g in Natural Matrix Sphenopteris Unique plate handmade in the

SKU: 73201636648
USD85.50 USD128.50

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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16

Description

Unique plate handmade in the south of morocco

Petrography: (A

They come from the famous sites of the Judith River Formation in Montana (Campanian stage

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

Otarion diffractum

22196 - Calcite Geode with Gypsum Crystal 680 g in Natural Matrix Sphenopteris Unique plate handmade in theSIZE: 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

Exchange/Return Notes
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