Sakhaite

General Information:
 Chemical Formula:
Ca3Mg(BO3)2(CO3)·0.36(H2O)
 Composition:
(Molecular Weight = 446.27 gm)
Calcium 26.94 % Ca
Magnesium 5.45 % Mg
Boron 9.69 % B 
Hydrogen 0.16 % H 
Carbon 2.69 % C 
Oxygen 55.07 % O 
 Empirical Formula:
Ca3Mg(BO3)2(CO3)·0.36(H2O)
 Environment:
In a skarn.
 IMA Status:
Approved IMA 1966
 Locality:
Solongo, Transbaikalia, Russia.
 Name Origin:
Named for the locality, Sakha being the name for Siberia in the Yakut language.
Physical Properties:
 Cleavage:
None
 Color:
colorless, gray, or gray white.
 Density:
2.78 - 2.83, Average = 2.8
 Diaphaniety:
Transparent to Translucent
 Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Massive - Uniformly indistinguishable crystals forming large masses.,
 Hardness:
5 - Apatite
 Luster:
Vitreous - Greasy
 Streak:
white
More details...