Deweylite

Overview

Mg3Si2O5(OH)4
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.53-2.65 g/cc
Hardness - Mohs	Deweylite - 2.5-3.0  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	green, red, yellow, white
Streak	white

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	distinct
Tenacity	brittle
Fracture	conchoidal
Luster	resinous

Similar Minerals

Dana Number : 71.01.02d.01

Class: 71

Group: 71.01

Subgroup: 71.01.02d - serpentine

Dana Number	Mineral Name	Formula
71.01.02d.00	chrysotile	Mg3Si2O5(OH)4
71.01.02d.01	clinochrysotile	Mg3Si2O5(OH)4
71.01.02d.01	deweylite	Mg3Si2O5(OH)4

Nickel-Strunz Number : 09.ED.15

Group : 09

Subgroup : ED

Nickel-Strunz Number	Mineral Name	Formula
09.ED.15	antigorite	(Mg,Fe+2)3(Si2O5)(OH)4
09.ED.15	caryopilite	(Mn+2,Mg,Zn,Fe+2)3(Si,As)2O5(OH,Cl)4
09.ED.15	chrysotile	Mg3Si2O5(OH)4
09.ED.15	clinochrysotile	Mg3Si2O5(OH)4
09.ED.15	cronstedtite	Fe+22Fe+3(SiFe+3)O5(OH)4
09.ED.15	deweylite	Mg3Si2O5(OH)4
09.ED.15	fraipontite	(Zn,Al)3(Si,Al)2O5(OH)4
09.ED.15	lizardite	Mg3Si2O5(OH)4
09.ED.15	nepouite	Ni3Si2O5(OH)4

Specimens

Localities

Uses