Reviews
2.25" Brown Calcite Crystal Cluster - Red Dome Mine
This is a cluster of heavily included brown calcite Crystals, collected from the Red Dome Mine in Australia. Due to the closure of this mine, it can be difficult to come across the stunning calcite crystals that this mine has been known to produce. The impurities within this crystals that give them their red-brown hue can likely be attributed to cuprite.
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
Red Dome Mine, Mungana, Queensland, Australia
SIZE
Cluster: 2.25 x 1.3"
CATEGORY
ITEM
#204686
