Pharmacosiderite

Overview

KFe+34(AsO4)3(OH)4
Fluorescence: none	Barely Detectable Radiation	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.8-3.0 g/cc
Hardness - Mohs	Pharmacosiderite - 2.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, brown, yellow
Streak	yellowish green

Crystal Properties

Property	Value
Crystal structure	isometric - hextetrahedral
Cleavage	indistinct
Tenacity	brittle
Fracture	sectile
Luster	adamantine

Similar Minerals

Dana Number : 42.08.01.01

Class: 42

Group: 42.08

Subgroup: 42.08.01 - pharmacosiderite

Dana Number	Mineral Name	Formula
42.08.01.01	pharmacosiderite	KFe+34(AsO4)3(OH)4
42.08.01.03	bariopharmacosiderite	BaFe+34(AsO4)3(OH)5·5(H2O)

Nickel-Strunz Number : 08.DK.10

Group : 08

Subgroup : DK

Nickel-Strunz Number	Mineral Name	Formula
08.DK.10	bariopharmacosiderite	BaFe+34(AsO4)3(OH)5·5(H2O)
08.DK.10	pharmacosiderite	KFe+34(AsO4)3(OH)4

Specimens

Localities

Uses