22109 - Top Beautiful Huge 5.27 Inch Calcite Crystals from South Morocco Euclastes It has been removed from

It has been removed from a nodule-concretion

org/wiki/Aoufous_Formation

Mosasauridae) from the Upper Cretaceous of Belgium

Ge = 2200 ug/g

mire/swamp (1)

22109 - Top Beautiful Huge 5.27 Inch Calcite Crystals from South Morocco Euclastes It has been removed fromHuge and sharp crystals of calcite from a new location unpublished in the mountains of the Erich region, Morocco. 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