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See also Bruton 1966
Müller and Henle 1838 (nurse shark)
Arthropomata
Location: South Morocco
[This last paragraph is from Wikipedia - License: Attribution-ShareAlike 3
SWJ0034 - Finest Grade Pink Cobaltoan Calcite Crystals on Matrix - Bou Azzer Mine (Morocco) Bone_Claw See also Bruton 1966This is a beautiful, 68mm wide cluster of finest grade pink Cobaltoan calcite from the famous Bou Azzer Mines (South 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". The Cobaltoan calcite is a variety of calcite containing Co2+ replacing Ca, that's the reason for its pretty pink color. Size: 68 x 40