Langite

Overview

Cu4(SO4)(OH)6·2(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.5 g/cc
Hardness - Mohs	Langite - 2.5-3.0  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, blue
Streak	greenish blue

Crystal Properties

Property	Value
Crystal structure	monoclinic - domatic
Cleavage	perfect
Tenacity	-
Fracture	uneven
Luster	vitreous, glassy

Similar Minerals

Dana Number : 31.04.03.01

Class: 31

Group: 31.04

Subgroup: 31.04.03 - langite

Dana Number	Mineral Name	Formula
31.04.03.01	langite	Cu4(SO4)(OH)6·2(H2O)

Nickel-Strunz Number : 07.DD.10

Group : 07

Subgroup : DD

Nickel-Strunz Number	Mineral Name	Formula
07.DD.10	langite	Cu4(SO4)(OH)6·2(H2O)
07.DD.10	wroewolfeite	Cu4(SO4)(OH)6·2(H2O)

Specimens

Localities

Uses