3.8" Dogtooth Calcite Crystal - Morocco

This is a dogtooth calcite crystal collected from Morocco. This crystal is 3.8" long, and has a slight honey-yellow tint to it. The termination of the specimen looks to be either structurally askew, or cleaved. However, the remaining crystal looks undamaged, with a beautiful layered formation near its base.

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
Morocco
SIZE
3.8" long, 2.8" wide
CATEGORY
ITEM
#50172