Penkvilksite

Overview

Na4(Ti+4,Zr)2(Si8O22)·4(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.63 g/cc
Hardness - Mohs	Penkvilksite - 5  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 - prismatic
Cleavage	perfect
Tenacity	-
Fracture	-
Luster	pearly

Similar Minerals

Dana Number : 70.02.02.01

Class: 70

Group: 70.02

Subgroup: 70.02.02 - penkvilksite

Dana Number	Mineral Name	Formula
70.02.02.01	penkvilksite	Na4(Ti+4,Zr)2(Si8O22)·4(H2O)

Nickel-Strunz Number : 09.EA.60

Group : 09

Subgroup : EA

Nickel-Strunz Number	Mineral Name	Formula
09.EA.60	penkvilksite	Na4(Ti+4,Zr)2(Si8O22)·4(H2O)

Specimens

Localities

Uses