Pumpellyite-(Fe)

Overview

Ca2Fe+2(Al,Fe+3)2(SiO4)(Si2O7)(OH)2·(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.2 g/cc
Hardness - Mohs	Pumpellyite-(Fe) - 5.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, brown
Streak	white

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	good
Tenacity	brittle
Fracture	sub-conchoidal
Luster	vitreous, glassy

Similar Minerals

Dana Number : 58.02.02.05

Class: 58

Group: 58.02

Subgroup: 58.02.02 - pumpellyite

Dana Number	Mineral Name	Formula
58.02.02.05	pumpellyite-(Fe)	Ca2Fe+2(Al,Fe+3)2(SiO4)(Si2O7)(OH)2·(H2O)
58.02.02.09	shuiskite	Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2·(H2O)

Nickel-Strunz Number : 09.BG.20

Group : 09

Subgroup : BG

Nickel-Strunz Number	Mineral Name	Formula
09.BG.20	pumpellyite-(Fe)	Ca2Fe+2(Al,Fe+3)2(SiO4)(Si2O7)(OH)2·(H2O)
09.BG.20	shuiskite	Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2·(H2O)

Specimens

Localities

Uses