Calcite rafts
Videos
Calcite crystals form on the surface of quiescent bodies of water, even when the bulk water is not supersaturated with respect to calcium carbonate. The crystals grow, attach to one other and appear t
Calcite rafts on the surface of water in Carpinteria Reservoir
Lattice work or calcite rafts on a calthemite (soda) straw stalactite drop
Calcite rafts in Kartchner Caverns, Arizona
Detail of calcite rafts on the surface of water in Carpinteria Reservoir
Calcium
Videos
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical an
Calcium crystals stored in mineral oil
One of the 'Ain Ghazal Statues, made from lime plaster
Travertine terraces in Pamukkale, Turkey