Afwillite

Overview

Ca3(Si2O4)(OH)6
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.62 g/cc
Hardness - Mohs	Afwillite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	colorless, white
Streak	white

Crystal Properties

Property	Value
Crystal structure	monoclinic - sphenoidal
Cleavage	perfect
Tenacity	brittle
Fracture	conchoidal
Luster	vitreous, glassy

Similar Minerals

Dana Number : 52.04.07.01

Class: 52

Group: 52.04

Subgroup: 52.04.07 - afwillite

Dana Number	Mineral Name	Formula
52.04.07.01	afwillite	Ca3(Si2O4)(OH)6
52.04.07.02	bultfonteinite	Ca2(SiO2)(OH,F)4
52.04.07.04	jasmundite	Ca11(SiO4)4O2S

Nickel-Strunz Number : 09.AG.75

Group : 09

Subgroup : AG

Nickel-Strunz Number	Mineral Name	Formula
09.AG.75	afwillite	Ca3(Si2O4)(OH)6

Specimens

Localities

Uses