General Information:
Chemical Formula:
MgAl(SO4)2F·18(H2O)
Composition:
(Molecular Weight = 586.69 gm)
Magnesium 4.14 % Mg
Aluminum 4.60 % Al
Hydrogen 6.18 % H
Sulfur 10.93 % S
Oxygen 70.90 % O
Fluorine 3.24 % F
Empirical Formula:
MgAl(SO4)2F·18(H2O)
Environment:
Post mining product in oxidizable sulfide deposits containing fluorine bearing minerals.
IMA Status:
Approved IMA 1979
Locality:
Lone Pine mine, Catron County, New Mexico.
Name Origin:
Named after William Wilcox, who discovered this mining district in 1879. He was killed by Apache Indians in 1880.
Physical Properties:
Color:
colorless or white.
Density:
1.58
Diaphaniety:
Transparent to Translucent
Habits:
Encrustations - Forms crust-like aggregates on matrix., Efflorescences - Crystals covering matrix, generally produced from transpiro-evaporation., Water Soluble - Water soluble minera l.
Hardness:
2 - Gypsum
Streak:
white
More details...