BRAUNITE-I


Meaning of BRAUNITE-I in English

General Information:

Chemical Formula:

Mn++Mn+++6SiO12

Composition:

(Molecular Weight = 604.64 gm)

Manganese 63.60 % Mn

Silicon 4.64 % Si

Oxygen 31.75 % O

Empirical Formula:

Mn2+Mn3+6SiO12

Environment:

Manganese oxide mineral deposits. Metamorphic and secondary weathering environments

Locality:

Metamorphic, hydrothermal, and sedimentary rocks.

Name Origin:

Named after K. Braun (1790-1872) from Gotha, Germany.

Physical Properties:

Cleavage:

[111] Perfect

Color:

grayish black, brownish gray, or dark brownish black.

Density:

4.72 - 4.82, Average = 4.76

Diaphaniety:

Opaque

Habits:

Massive - Uniformly indistinguishable crystals forming large masses., ,

Hardness:

6-6.5 - Orthoclase-Pyrite

Luminescence:

Non-fluorescent.

Luster:

Sub Metallic

Streak:

brownish gray black

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .