Bokite

Overview

(Al,Fe+3)1.3(V+4,Fe)8O20·4.7(H2O)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.97-3.1 g/cc
Hardness - Mohs	Bokite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	black
Streak	brown black

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	perfect
Tenacity	-
Fracture	-
Luster	metallic

Similar Minerals

Dana Number : 47.03.02.05

Class: 47

Group: 47.03

Subgroup: 47.03.02 - straczekite

Dana Number	Mineral Name	Formula
47.03.02.01	straczekite	(Ca,K,Ba)(V+5,V+4)8O20·3(H2O)
47.03.02.05	bokite	(Al,Fe+3)1.3(V+4,Fe)8O20·4.7(H2O)
47.03.02.06	kazakhstanite	Fe+35V+43V+512O39(OH)9·9(H2O)

Nickel-Strunz Number : 04.HE.20

Group : 04

Subgroup : HE

Nickel-Strunz Number	Mineral Name	Formula
04.HE.20	bokite	(Al,Fe+3)1.3(V+4,Fe)8O20·4.7(H2O)
04.HE.20	straczekite	(Ca,K,Ba)(V+5,V+4)8O20·3(H2O)

Specimens

Localities

Uses