General Information:
Chemical Formula:
Na6(SO4)2FCl
Composition:
(Molecular Weight = 384.52 gm)
Sodium 35.87 % Na
Sulfur 16.68 % S
Chlorine 9.22 % Cl
Oxygen 33.29 % O
Fluorine 4.94 % F
Empirical Formula:
Na6(SO4)2FCl
Environment:
Continental evaporite deposits.
Locality:
Searles Lake, San Bernardino Co., California.
Name Origin:
Named after its composition of sulfate plus NaCl (halite). .
Physical Properties:
Cleavage:
[???] Perfect
Color:
colorless, green yellow, gray, grayish yellow, or light green yellow.
Density:
2.43
Diaphaniety:
Transparent
Hardness:
3.5 - Copper Penny
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Greasy
Streak:
white
More details...