Ekaterinite

General Information:
 Chemical Formula:
Ca2B4O7(Cl,OH)2·2(H2O)
 Composition:
(Molecular Weight = 333.11 gm)
Calcium 24.06 % Ca
Boron 12.98 % B 
Hydrogen 1.36 % H 
Chlorine 15.96 % Cl
Oxygen 45.63 % O 
 Empirical Formula:
Ca2B4O7Cl1.5(OH)0.5·2(H2O)
 IMA Status:
Approved IMA 1980
Physical Properties:
 Color:
pearl white or pink.
 Density:
2.44
 Hardness:
1 - Talc
 Luster:
Pearly
 Streak:
white
More details...