General Information:
Chemical Formula:NaF
Composition:(Molecular Weight = 41.99 gm)Sodium 54.75 %
NaFluorine 45.25 %
F Empirical Formula: NaF
Environment:In nepheline-syenite composition rocks.
Locality:Islands of Los, French Guina.
Name Origin:Named after the French traveller, Villium.
Physical Properties: Cleavage:[100] Perfect, [010] Perfect, [001] Perfect
Color:colorless, dark red, orange brown, or pink.
Density:2.79 - 2.8, Average = 2.79
Diaphaniety:Transparent
Habits:Massive - Granular - Common texture observed in granite and other igneous rock., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Hardness:2.5 - Finger Nail
Luminescence:Fluorescent.
Luster:Vitreous (Glassy)
Streak:pinkish white
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