General Information:
Chemical Formula:
Ca6Al2(SO4)3(OH)12·26(H2O)
Composition:
(Molecular Weight = 1,255.11 gm)
Calcium 19.16 % Ca
Aluminum 4.30 % Al
Hydrogen 5.14 % H
Sulfur 7.66 % S
Oxygen 63.74 % O
Empirical Formula:
Ca6Al2(SO4)3(OH)12·26(H2O)
IMA Status:
Approved IMA 1960
Physical Properties:
Cleavage:
[1010] Perfect
Color:
colorless or white.
Density:
1.8
Diaphaniety:
Transparent
Habits:
Acicular - Occurs as needle-like crystals., ,
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
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