Wilcoxite

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
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