Karasugite

General Information:
 Chemical Formula:
SrCaAl(F,OH)7
 Composition:
(Molecular Weight = 284.18 gm)
Strontium 30.83 % Sr
Calcium 14.10 % Ca
Aluminum 9.49 % Al
Hydrogen 0.62 % H 
Oxygen 9.85 % O 
Fluorine 35.10 % F 
 Empirical Formula:
SrCaAlF5.25(OH)1.75
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[100] Perfect
 Color:
colorless.
 Density:
3.206
 Diaphaniety:
Transparent
 Luster:
Vitreous (Glassy)
 Streak:
white
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