General Information:
Chemical Formula:(Al,Fe+++)14(PO4)11(SO4)(OH)7·84(H2O)
Composition:(Molecular Weight = 3,208.56 gm)Aluminum 10.09 %
AlIron 3.48 %
FePhosphorus 10.62 %
P Hydrogen 5.50 %
H Sulfur 1.00 %
S Oxygen 69.31 %
O Empirical Formula: Al12Fe3+2(PO4)11(SO4)(OH)7·84(H2O)
IMA Status:Approved IMA 1978
Locality:West Dreifontein cave, near Carlstonville, Transvaal, South Africa.
Name Origin:Named for the South African Speleological Society (SAS).
Physical Properties: Cleavage:[001] Perfect
Color:white.
Density:1.75
Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Nodular - Tuberose forms having irregular protuberances over the surface.,
Hardness:2-3 - Gypsum-Calcite
Streak:white
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