Hohmannite

Overview

Fe+32(SO4)2(OH)2·7(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.255 g/cc
Hardness - Mohs	Hohmannite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	brown, orange, red
Streak	orange

Crystal Properties

Property	Value
Crystal structure	triclinic - pinacoidal
Cleavage	perfect
Tenacity	-
Fracture	-
Luster	vitreous, glassy

Similar Minerals

Dana Number : 31.09.04.01

Class: 31

Group: 31.09

Subgroup: 31.09.04 - hohmannite

Dana Number	Mineral Name	Formula
31.09.04.01	hohmannite	Fe+32(SO4)2(OH)2·7(H2O)

Nickel-Strunz Number : 07.DB.30

Group : 07

Subgroup : DB

Nickel-Strunz Number	Mineral Name	Formula
07.DB.30	amarantite	Fe+32(SO4)2O·7(H2O)
07.DB.30	hohmannite	Fe+32(SO4)2(OH)2·7(H2O)

Specimens

Localities

Uses