Orthopinakiolite

Overview

(Mg,Mn+2)2Mn+3BO5
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.03 g/cc
Hardness - Mohs	Orthopinakiolite - 6  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	black
Streak	brown gray

Crystal Properties

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

Similar Minerals

Dana Number : 24.02.05.01

Class: 24

Group: 24.02

Subgroup: 24.02.05 - orthopinakiolite

Dana Number	Mineral Name	Formula
24.02.05.01	orthopinakiolite	(Mg,Mn+2)2Mn+3BO5

Nickel-Strunz Number : 06.AB.40

Group : 06

Subgroup : AB

Nickel-Strunz Number	Mineral Name	Formula
06.AB.40	orthopinakiolite	(Mg,Mn+2)2Mn+3BO5

Specimens

Localities

Uses