Aldermanite

General Information:
 Chemical Formula:
Mg5Al12(PO4)8(OH)22·32(H2O)
 Composition:
(Molecular Weight = 2,155.72 gm)
Magnesium 5.64 % Mg
Aluminum 15.02 % Al
Phosphorus 11.49 % P 
Hydrogen 4.02 % H 
Oxygen 63.83 % O 
 Empirical Formula:
Mg5Al12(PO4)8(OH)22·32(H2O)
 Environment:
Moculata P deposit with fluellite.
 IMA Status:
Approved IMA 1980
 Locality:
TL: Angaston, 60 km NE of Adelaide, Australia, SA,
 Name Origin:
Named for Arthur Richard Alderman (1901-1980), Mineralogist and petrologist, University of Adelaide, SA, Australia.
Physical Properties:
 Color:
colorless.
 Diaphaniety:
Transparent
 Habits:
Fibrous - Crystals made up of fibers., Flakes - Flat, thin crystals or aggregates.,
 Hardness:
2 - Gypsum
 Luster:
Pearly
 Streak:
white
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