Dufrenoysite

Overview

Pb2As2S5
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	5.55-5.57 g/cc
Hardness - Mohs	Dufrenoysite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	gray
Streak	red brown

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	perfect
Tenacity	brittle
Fracture	conchoidal
Luster	sub metallic

Similar Minerals

Dana Number : 03.05.09.03

Class: 03

Group: 03.05

Subgroup: 03.05.09 - cosalite

Dana Number	Mineral Name	Formula
03.05.09.01	cosalite	Pb2Bi2S5
03.05.09.03	dufrenoysite	Pb2As2S5

Nickel-Strunz Number : 02.HC.05d

Group : 02

Subgroup : HC

Nickel-Strunz Number	Mineral Name	Formula
02.HC.05d	dufrenoysite	Pb2As2S5

Specimens

Localities

Uses