General Information:
Chemical Formula:
Pb3AlF9·(H2O)
Composition:
(Molecular Weight = 630.38 gm)
Aluminum 4.28 % Al
Hydrogen 0.32 % H
Lead 65.74 % Pb
Oxygen 2.54 % O
Fluorine 27.12 % F
Empirical Formula:
2(Pb)AlF9·(H2O)
Environment:
Reaction of supergene solutions on galena and fluorite.
IMA Status:
Approved IMA 1987
Locality:
Grand Reef mine, Laurel Canyon, Graham County, Arizona.
Name Origin:
Named for the Arabaipa mining district.
Physical Properties:
Cleavage:
[010] Perfect, [100] Good, [001] Good
Color:
colorless.
Diaphaniety:
Transparent
Habits:
Platy - Sheet forms (e.g. micas)., ,
Hardness:
2 - Gypsum
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Pearly
Streak:
white
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