Manganogrunerite

Overview

Mn2Fe+25Si8O22(OH)2
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.1-3.4 g/cc
Hardness - Mohs	Manganogrunerite - 5.0-6.0  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	brown, green, yellow
Streak	white

Crystal Properties

Property	Value
Crystal structure	monoclinic -
Cleavage	perfect
Tenacity	brittle
Fracture	conchoidal
Luster	vitreous, silky

Similar Minerals

Dana Number : 66.01.01.05

Class: 66

Group: 66.01

Subgroup: 66.01.01 - Mg-Fe-Mn-Li amphiboles

Dana Number	Mineral Name	Formula
66.01.01.02	cummingtonite	Mg7Si8O22(OH)2
66.01.01.05	manganogrunerite	Mn2Fe+25Si8O22(OH)2

Nickel-Strunz Number : 09.DE.05

Group : 09

Subgroup : DE

Nickel-Strunz Number	Mineral Name	Formula
09.DE.05	anthophyllite	Mg7(Si8O22)(OH)2
09.DE.05	cummingtonite	Mg7Si8O22(OH)2
09.DE.05	ferro-anthophyllite	Fe+27Si8O22(OH)2
09.DE.05	holmquistite	(Li2Mg3Al2)Si8O22(OH)2
09.DE.05	manganogrunerite	Mn2Fe+25Si8O22(OH)2

Specimens

Localities

Uses