Thénardite

Overview

Na2SO4
Fluorescence: bright white under SW and LW	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.67-2.7 g/cc
Hardness - Mohs	Thénardite - 2.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	white
Streak	white

Crystal Properties

Property	Value
Crystal structure	orthorhombic - dipyramidal
Cleavage	perfect
Tenacity	brittle
Fracture	splintery
Luster	vitreous, greasy

Similar Minerals

Dana Number : 28.02.03.01

Class: 28

Group: 28.02

Subgroup: 28.02.03 - thenardite

Dana Number	Mineral Name	Formula
28.02.03.01	thénardite	Na2SO4

Nickel-Strunz Number : 07.AC.25

Group : 07

Subgroup : AC

Nickel-Strunz Number	Mineral Name	Formula
07.AC.25	thénardite	Na2SO4

Specimens

Localities

Uses