PROBERTITE


Meaning of PROBERTITE in English

General Information:

Chemical Formula:

NaCaB5O7(OH)4·3(H2O)

Composition:

(Molecular Weight = 351.19 gm)

Sodium 6.55 % Na

Calcium 11.41 % Ca

Boron 15.39 % B

Hydrogen 2.87 % H

Oxygen 63.78 % O

Empirical Formula:

NaCaB5O7(OH)4·3(H2O)

Environment:

Kramer borate deposits.

Locality:

Boron, Kern Co., California.

Physical Properties:

Cleavage:

[???] Perfect

Color:

colorless.

Density:

2.14

Diaphaniety:

Transparent

Habits:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), ,

Hardness:

3.5 - Copper Penny

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .