22115 - Top Beautiful Huge 3.17 Inch Calcite Crystals from South Morocco Morocco See also Kumar and Loyal

See also Kumar and Loyal 1987

Nice Collection of 5 Fulgurites ("Petrified lightning")

best known from the Fossil Ridge outcrops of the Burgess Shale

Acanthopyge granulosa

DIAGNOSIS: moderatly large mosasaur very long

22115 - Top Beautiful Huge 3.17 Inch Calcite Crystals from South Morocco Morocco See also Kumar and LoyalHuge and sharp crystals of calcite from a new location unpublished in the mountains of the Erich region, Morocco.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