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This Specimen has been sold.
HERE ARE SOME OTHER SIMILAR FOSSILS FOR SALE
4" Large Yellow Calcite Crystal - Maharashtra, India
This is a huge calcite crystal that was collected from Maharashtra, India. It features yellow coloration, nicely preserved crystal faces (some are cleaved) and some transparency and optical calcite properties, depending on which face you look through. The dimensions of this gorgeous specimen are 4 x 2.8 x 2.5".
Calcite, CaCO3, is a carbonate mineral and the most stable polymorph of calcium carbonate. The other polymorphs are the minerals aragonite and vaterite. Calcite crystals are trigonal-rhombohedral, though actual calcite rhombohedra are rare as natural crystals. However, they show a remarkable variety of habits including acute to obtuse rhombohedra, tabular forms, and prisms. Calcite exhibits several twinning types adding to the variety of observed forms. It may occur as fibrous, granular, lamellar, or compact. Cleavage is usually in three directions parallel to the rhombohedron form.
