VILLIAUMITE


Meaning of VILLIAUMITE in English

General Information:

Chemical Formula:

NaF

Composition:

(Molecular Weight = 41.99 gm)

Sodium 54.75 % Na

Fluorine 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

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .