General Information:
Chemical Formula:MgAl(SO4)2F·18(H2O)
Composition:(Molecular Weight = 586.69 gm)Magnesium 4.14 %
MgAluminum 4.60 %
AlHydrogen 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
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