Pyrosmalite-(Mn)

Overview

(Mn+2,Fe+2)8Si6O15(OH,Cl)10
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.06-3.19 g/cc
Hardness - Mohs	Pyrosmalite-(Mn) - 4.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, brown, gray
Streak	brownish yellow

Crystal Properties

Property	Value
Crystal structure	trigonal - hexagonal scalenohedral
Cleavage	good
Tenacity	-
Fracture	-
Luster	vitreous, glassy

Similar Minerals

Dana Number : 72.04.01a.02

Class: 72

Group: 72.04

Subgroup: 72.04.01a - pyrosmalite

Dana Number	Mineral Name	Formula
72.04.01a.01	pyrosmalite-(Fe)	(Fe+2,Mn+2)8Si6O15(OH,Cl)10
72.04.01a.02	pyrosmalite-(Mn)	(Mn+2,Fe+2)8Si6O15(OH,Cl)10

Nickel-Strunz Number : 09.EE.10

Group : 09

Subgroup : EE

Nickel-Strunz Number	Mineral Name	Formula
09.EE.10	friedelite	Mn8Si6O15(OH,Cl)10
09.EE.10	pyrosmalite-(Fe)	(Fe+2,Mn+2)8Si6O15(OH,Cl)10
09.EE.10	pyrosmalite-(Mn)	(Mn+2,Fe+2)8Si6O15(OH,Cl)10

Specimens

Localities

Uses