2.6" Fluorescent Calcite Crystal - Sept-Îles, Quebec
This is a 2.6" wide calcite crystal, collected near Sept-Îles in Quebec, Canada. It is cleaved along two faces of the crystal where it was removed from its matrix. Under short and longwave ultraviolet light, the calcite exhibits an orange fluorescence.
Ex-Gordian collection specimen.
Ex-Gordian collection specimen.
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.
SPECIES
Calcite
LOCATION
Near Sept-Îles, Quebec, Canada
SIZE
2.6 x 1.55"
CATEGORY
ITEM
#251232