Atacamite

Overview

Cu+22Cl(OH)3
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.74-3.78 g/cc
Hardness - Mohs	Atacamite - 3-3.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, yellow, black
Streak	apple green

Crystal Properties

Property	Value
Crystal structure	orthorhombic - dipyramidal
Cleavage	perfect
Tenacity	-
Fracture	conchoidal
Luster	adamantine

Similar Minerals

Dana Number : 10.01.01.01

Class: 10

Group: 10.01

Subgroup: 10.01.01 - atacamite

Dana Number	Mineral Name	Formula
10.01.01.01	atacamite	Cu+22Cl(OH)3
10.01.01.03	gillardite	Cu3NiCl2(OH)6
10.01.01.04	haydeeite	Cu3Mg(OH)6Cl2

Nickel-Strunz Number : 03.DA.10a

Group : 03

Subgroup : DA

Nickel-Strunz Number	Mineral Name	Formula
03.DA.10a	atacamite	Cu+22Cl(OH)3

Specimens

Localities

Uses