Stellerite

Overview

CaAl2Si7O18·7(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.12-2.13 g/cc
Hardness - Mohs	Stellerite - 4.5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	white, pink, orange, brown, red
Streak	white

Crystal Properties

Property	Value
Crystal structure	orthorhombic - dipyramidal
Cleavage	perfect
Tenacity	-
Fracture	-
Luster	vitreous, glassy

Similar Minerals

Dana Number : 77.01.04.04

Class: 77

Group: 77.01

Subgroup: 77.01.04 - heulandite

Dana Number	Mineral Name	Formula
77.01.04.01	heulandite-(Ca)	(Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O)
77.01.04.02	clinoptilolite-(K)	(K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)
77.01.04.02a	clinoptilolite-(Na)	(Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)
77.01.04.02b	clinoptilolite-(Ca)	(Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O)
77.01.04.03	stilbite-(Ca)	NaCa4(Al8Si28O72)·28-32(H2O)
77.01.04.04	stellerite	CaAl2Si7O18·7(H2O)
77.01.04.05	barrerite	(Na,K,Ca)2Al2Si7O18·6(H2O)

Nickel-Strunz Number : 09.GE.15

Group : 09

Subgroup : GE

Nickel-Strunz Number	Mineral Name	Formula
09.GE.15	barrerite	(Na,K,Ca)2Al2Si7O18·6(H2O)
09.GE.15	stellerite	CaAl2Si7O18·7(H2O)

Specimens

Localities

Uses