General Information:
Chemical Formula:
Ca4Mg(AsO3OH)2(AsO4)2·4(H2O)
Composition:
(Molecular Weight = 814.37 gm)
Calcium 19.69 % Ca
Magnesium 2.98 % Mg
Arsenic 36.80 % As
Hydrogen 1.24 % H
Oxygen 39.29 % O
Empirical Formula:
Ca4Mg(AsO3OH)2(AsO4)2·4(H2O)
Environment:
Probably formed from the dehydration of picopharmacolite.
IMA Status:
Approved IMA 1972
Locality:
Irhtem ore deposit, Morocco.
Name Origin:
Named for the locality.
Physical Properties:
Color:
colorless, white, pale rose, or pink.
Density:
3.09
Diaphaniety:
Transparent to Translucent
Habits:
Spherical - Spherical, rounded aggregates., ,
Luster:
Silky
Streak:
white
More details...