HUMITE


Meaning of HUMITE in English

General Information:

Chemical Formula:

(Mg,Fe++)7(SiO4)3(F,OH)2

Composition:

(Molecular Weight = 538.58 gm)

Magnesium 23.69 % Mg

Iron 18.15 % Fe

Silicon 15.64 % Si

Hydrogen 0.09 % H

Oxygen 37.13 % O

Fluorine 5.29 % F

Empirical Formula:

Mg5.25Fe2+1.75(SiO4)3F1.5(OH)0.5

Environment:

Commonly interlayered with clinohumite.

Locality:

Mte. Somma, Vesuvius, Italy.

Physical Properties:

Cleavage:

[001] Poor

Color:

brown, yellow, white, or dark orange.

Density:

3.1 - 3.2, Average = 3.15

Diaphaniety:

Transparent to translucent

Hardness:

6-6.5 - Orthoclase-Pyrite

Luster:

Vitreous (Glassy)

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .