General Information:
Chemical Formula:
Na3Al16(SO4)2(PO4)10(OH)17·20(H2O)
Composition:
(Molecular Weight = 2,291.95 gm)
Sodium 3.01 % Na
Aluminum 18.84 % Al
Phosphorus 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
More details...