General Information:
Chemical Formula:
CaAl2Si4O12·6(H2O)
Composition:
(Molecular Weight = 506.47 gm)
Calcium 7.91 % Ca
Aluminum 10.65 % Al
Silicon 22.18 % Si
Hydrogen 2.39 % H
Oxygen 56.86 % O
Empirical Formula:
CaAl2Si4O12·6(H2O)
Environment:
Amygdaloidal cavities of basalt and related rocks.
Locality:
Common worldwide.
Name Origin:
From Gk. chabazios, tune or melody, one of twenty stones named in the poem Peri lithos, which extolled the virtues of minerals. The poem is ascribed to Orpheus, legendary founder of the Orphic cult, which flourished in
Physical Properties:
Cleavage:
[1011] Imperfect
Color:
colorless, green, yellow, white, or pink.
Density:
2.05 - 2.15, Average = 2.09
Diaphaniety:
Translucent to transparent
Habits:
Pseudo Cubic - Crystals show a cubic outline., Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.,
Hardness:
4 - Fluorite
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
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