Epistilbite

Overview

CaAl2Si6O16·5(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.2-2.3 g/cc
Hardness - Mohs	Epistilbite - 4.0-5.0  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	white, yellow, brown
Streak	white

Crystal Properties

Property	Value
Crystal structure	triclinic - pedial
Cleavage	perfect
Tenacity	-
Fracture	uneven
Luster	vitreous, pearly

Similar Minerals

Dana Number : 77.01.06.02

Class: 77

Group: 77.01

Subgroup: 77.01.06 - mordenite

Dana Number	Mineral Name	Formula
77.01.06.01	mordenite	(Ca,Na2,K2)Al2Si10O24·7(H2O)
77.01.06.02	epistilbite	CaAl2Si6O16·5(H2O)
77.01.06.05	dachiardite-(Na)	(Na2,Ca,K2)4Al4Si20O48·13(H2O)
77.01.06.06	ferrierite-(Mg)	(Mg,Na,K)2(Mg(Si,Al)18O36·9(H2O)
77.01.06.06b	ferrierite-(Na)	(Na,K)2Mg(Si,Al)18O36·9(H2O)

Nickel-Strunz Number : 09.GD.45

Group : 09

Subgroup : GD

Nickel-Strunz Number	Mineral Name	Formula
09.GD.45	epistilbite	CaAl2Si6O16·5(H2O)

Specimens

Localities

Uses