2.9" Calcite Crystal Cluster with Hematite Inclusions - Fluorescent!

This is a beautiful scalenohedral calcite crystal cluster that contains hematite inclusions. This specimen was collected from Daye County in the Hubei Province of China. Under shortwave ultraviolet light these crystals react by fluorescing orange.

One edge of the rock has been cut flat for presentation.

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.
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DETAILS
SPECIES
Calcite
LOCATION
Daye Co., Huangshi Prefecture, Hubei Province, China
SIZE
2.9 x 2"
CATEGORY
ITEM
#198892