THENARDITE


Meaning of THENARDITE in English

General Information:

Chemical Formula:

Na2SO4

Composition:

(Molecular Weight = 142.04 gm)

Sodium 32.37 % Na

Sulfur 22.57 % S

Oxygen 45.06 % O

Empirical Formula:

Na2(SO4)

Environment:

Non-marine evaporite deposits in arid climates.

Locality:

Searles Lake, San Bernardino Co., California.

Name Origin:

Named after the French chemist, L. J. Thenard (1777-1826).

Physical Properties:

Cleavage:

[010] Perfect

Color:

white, grayish white, yellowish white, reddish white, or brownish white.

Density:

2.67 - 2.7, Average = 2.68

Diaphaniety:

Transparent

Habits:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Tabular - Form dimensions are thin in one direction., Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2.5 - Finger Nail

Luminescence:

Fluorescent.

Luster:

Vitreous - Greasy

Streak:

white

More details...

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