Calcium Carbonate Calcite type
CaCO3
Chemical name
Calcium Carbonate Calcite type
Mineral name
Calcite
Chemical formula
CaCO3
Crystal system
trigonal
Crystal Class
3 2/m
Space Group
R3c
Unit cell
a [Å]:4,99
b [Å]:
c [Å]:17,06
Molecular weight [g/mol]
100,09
Frequent crystal surfaces
{1010}, {0001}, {0112}, {0221}
Twinning
twins (0001), (0112), (1011)
Mohs hardness
3
Density [g/cm3]
2,6-2,8
Cleavage
(1011)
Fracture / Tenacity
perfect
Color
colorless
Streak
white transparent
Transparency
transparent
Refractive Index
n=1,658
Birefringence δ
0,174