Calcite is an aid to healing and strengthening of bones and teeth, as well as strengthening cell walls and may also support clotting of the blood.
It forms from both the chemical precipitation of calcium carbonate and the transformation of shell, coral, fecal and algal debris into calcite during diagenesis. Limestone also forms as a deposit in caves from the precipitation of calcium carbonate.
Crystal class: Hexagonal scalenohedral (3m); H-M symbol: (3 2/m)
Crystal system: trigonal crystal system Mohs scale hardness: 3 (defining mineral)
Color is white or none, though shades of gray, red, orange, yellow, green, blue, violet, brown, or even black can occur when the mineral is charged with impurities.
