General Information:
Chemical Formula:NaCaAlF6·(H2O)
Composition:(Molecular Weight = 222.06 gm)Sodium 10.35 %
NaCalcium 18.05 %
CaAluminum 12.15 %
AlHydrogen 0.91 %
H Oxygen 7.21 %
O Fluorine 51.33 %
F Empirical Formula: NaCaAlF6·(H2O)
Environment:Aleration product of cryolite.
Locality:Greenland, Ural Mountains, Russia.
Physical Properties: Cleavage:[001] Poor
Color:colorless or white.
Density:2.98
Diaphaniety:Transparent
Habits:Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Twinning Common - Crystals are usually twinned., Pseudo Orthorhombic - Crystals show an orthorhombic shape.
Hardness:3 - Calcite
Luminescence:Non-fluorescent.
Luster:Vitreous - Greasy
Streak:white
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