General Information:
Chemical Formula:Na3Al16(SO4)2(PO4)10(OH)17·20(H2O)
Composition:(Molecular Weight = 2,291.95 gm)Sodium 3.01 %
NaAluminum 18.84 %
AlPhosphorus 13.51 %
P Hydrogen 2.51 %
H Sulfur 2.80 %
S Oxygen 59.34 %
O Empirical Formula: Na3Al16(SO4)2(PO4)10(OH)17·20(H2O)
IMA Status:Approved IMA 1981
Locality:Tom's quarry, near Kapunda, SA, Australia.
Name Origin:Named for Vincent Peisley (1941-), Australian mineral collector who found the mineral.
Physical Properties: Color:white.
Density:2.11
Habits:Compact - Occurs as a compact mass., ,
Hardness:3 - Calcite
Luster:Earthy (Dull)
Streak:white
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