Collinsite

Overview

Ca2(Mg,Fe+2)(PO4)2·2(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.95 g/cc
Hardness - Mohs	Collinsite - 3.0-3.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	colorless, white, brown
Streak	white

Crystal Properties

Property	Value
Crystal structure	triclinic - pinacoidal
Cleavage	perfect
Tenacity	brittle
Fracture	brittle
Luster	silky

Similar Minerals

Dana Number : 40.02.02.03

Class: 40

Group: 40.02

Subgroup: 40.02.02 - fairfieldite

Dana Number	Mineral Name	Formula
40.02.02.02	messelite	Ca2(Fe+2,Mn)(PO4)2·2(H2O)
40.02.02.03	collinsite	Ca2(Mg,Fe+2)(PO4)2·2(H2O)
40.02.02.07	beta-roselite	Ca2(Co,Mg)(AsO4)2·2(H2O)
40.02.02.10	nickeltalmessite	Ca2Ni(AsO4)2·2(H2O)

Nickel-Strunz Number : 08.CG.05

Group : 08

Subgroup : CG

Nickel-Strunz Number	Mineral Name	Formula
08.CG.05	collinsite	Ca2(Mg,Fe+2)(PO4)2·2(H2O)
08.CG.05	messelite	Ca2(Fe+2,Mn)(PO4)2·2(H2O)

Specimens

Localities

Uses