20799 - Top Beautiful Huge 6.30 Inch Calcite Crystals from South Morocco - New Location Bismuth Characteristically platy Ilmenite crystals with

Characteristically platy Ilmenite crystals with irregular contour and completely pseudomorphed by Rutile

They lived during the Middle-Late Jurassic Epochs and serve as an biostratigraphic index fossil for that time period

Pol and Norell 2004

and from the land

and rarely we can see a claw like the one we are displaying here

20799 - Top Beautiful Huge 6.30 Inch Calcite Crystals from South Morocco - New Location Bismuth Characteristically platy Ilmenite crystals withHuge and sharp crystals of calcite from a new location unpublished in the mountains of the Erich region, Morocco.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