Braunite

Overview

Mn+2Mn+36SiO12
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.72-4.83 g/cc
Hardness - Mohs	Braunite - 6-6.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	brownish black, brownish gray, dark gray
Streak	brownish gray black

Crystal Properties

Property	Value
Crystal structure	tetragonal - ditetragonal dipyramidal
Cleavage	perfect
Tenacity	-
Fracture	brittle
Luster	sub metallic

Similar Minerals

Dana Number : 07.05.01.01

Class: 07

Group: 07.05

Subgroup: 07.05.01 - humite

Dana Number	Mineral Name	Formula
07.05.01.01	braunite	Mn+2Mn+36SiO12

Nickel-Strunz Number : 09.AG.05

Group : 09

Subgroup : AG

Nickel-Strunz Number	Mineral Name	Formula
09.AG.05	braunite	Mn+2Mn+36SiO12

Specimens

Localities

Uses