Dolomite Ankerite
(CaMg(CO3)2) (CaFe(CO3)2).
Form.Wt.
Z 3 3
CrystalSystem Trig Trig
PointGroup -3 -3
SpaceGroup R-3 R-3
UnitCell
a(Å) 4.8069 4.830
c(Å) 16.0034 16.167
Vol(Å3) 320.24 326.63
MolarVol 64.293 65.576
Density 2.868 3.293
Thermal Expansion(Volumetric)
alpha 22.8
a0 0.11928
a1 3.1703
a2 -0.5393
Elastic Parameters
Ks(GPa) 94.9
G(GPa) 45.7