Ramsdellite

Overview

MnO2
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.37 g/cc
Hardness - Mohs	Ramsdellite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	black, gray
Streak	brownish black

Crystal Properties

Property	Value
Crystal structure	orthorhombic - dipyramidal
Cleavage	good
Tenacity	brittle
Fracture	brittle
Luster	metallic

Similar Minerals

Dana Number : 04.04.07.01

Class: 04

Group: 04.04

Subgroup: 04.04.07 - ramsdellite

Dana Number	Mineral Name	Formula
04.04.07.01	ramsdellite	MnO2

Nickel-Strunz Number : 04.DB.15a

Group : 04

Subgroup : DB

Nickel-Strunz Number	Mineral Name	Formula
04.DB.15a	ramsdellite	MnO2

Specimens

Localities

Uses