Pyrolusite

Overview

Mn+4O2
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	5.06 g/cc
Hardness - Mohs	Pyrolusite - 6-6.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	gray
Streak	Bluish black

Crystal Properties

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

Similar Minerals

Dana Number : 04.04.01.04

Class: 04

Group: 04.04

Subgroup: 04.04.01 - rutile

Dana Number	Mineral Name	Formula
04.04.01.01	rutile	TiO2
04.04.01.04	pyrolusite	Mn+4O2
04.04.01.05	cassiterite	SnO2
04.04.01.06	plattnerite	PbO2

Nickel-Strunz Number : 04.DB.05

Group : 04

Subgroup : DB

Nickel-Strunz Number	Mineral Name	Formula
04.DB.05	cassiterite	SnO2
04.DB.05	plattnerite	PbO2
04.DB.05	pyrolusite	Mn+4O2
04.DB.05	rutile	TiO2

Specimens

Localities

Uses