Johillerite

Overview

Na(Mn,Zn)3Cu(AsO4)3
Fluorescence: none	Barely Detectable Radiation	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.15 g/cc
Hardness - Mohs	Johillerite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	violet
Streak	white to very pale viole

Crystal Properties

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

Similar Minerals

Dana Number : 38.02.03.08

Class: 38

Group: 38.02

Subgroup: 38.02.03 - alluaudite

Dana Number	Mineral Name	Formula
38.02.03.02	hagendorfite	NaCaMn(Fe+2,Fe+3,Mg)2(PO4)3
38.02.03.08	johillerite	Na(Mn,Zn)3Cu(AsO4)3
38.02.03.09	nickenichite	Na0.8Ca0.4(Mg,Fe+3,Al)3Cu0.4(AsO4)3

Nickel-Strunz Number : 08.AC.10

Group : 08

Subgroup : AC

Nickel-Strunz Number	Mineral Name	Formula
08.AC.10	arseniopleite	(Ca,Na)(Na,Pb)Mn+2(Mn+2,Mg,Fe+2)2(AsO4)3
08.AC.10	hagendorfite	NaCaMn(Fe+2,Fe+3,Mg)2(PO4)3
08.AC.10	johillerite	Na(Mn,Zn)3Cu(AsO4)3
08.AC.10	nickenichite	Na0.8Ca0.4(Mg,Fe+3,Al)3Cu0.4(AsO4)3

Specimens

Localities

Uses