Naumannite

Overview

Ag2Se
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	6.50-8.0 g/cc
Hardness - Mohs	Naumannite - 2.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	black
Streak	black

Crystal Properties

Property	Value
Crystal structure	orthorhombic - disphenoidal
Cleavage	perfect
Tenacity	sectile
Fracture	brittle
Luster	metallic

Similar Minerals

Dana Number : 02.04.01.02

Class: 02

Group: 02.04

Subgroup: 02.04.01 - acanthite

Dana Number	Mineral Name	Formula
02.04.01.01	acanthite	Ag2S
02.04.01.02	naumannite	Ag2Se

Nickel-Strunz Number : 02.BA.30b

Group : 02

Subgroup : BA

Nickel-Strunz Number	Mineral Name	Formula
02.BA.30b	naumannite	Ag2Se

Specimens

Localities

Uses