Hulsite

Overview

(Fe+2,Mg)2(Fe+3,Sn)O2(BO3)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.3 g/cc
Hardness - Mohs	Hulsite - 3  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	black
Streak	black

Crystal Properties

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

Similar Minerals

Dana Number : 24.02.03.01

Class: 24

Group: 24.02

Subgroup: 24.02.03 - hulsite

Dana Number	Mineral Name	Formula
24.02.03.01	hulsite	(Fe+2,Mg)2(Fe+3,Sn)O2(BO3)
24.02.03.02	magnesiohulsite	(Mg,Fe+2)2(Mg,Fe+3,Sn+4)O2(BO3)

Nickel-Strunz Number : 06.AB.45

Group : 06

Subgroup : AB

Nickel-Strunz Number	Mineral Name	Formula
06.AB.45	hulsite	(Fe+2,Mg)2(Fe+3,Sn)O2(BO3)
06.AB.45	magnesiohulsite	(Mg,Fe+2)2(Mg,Fe+3,Sn+4)O2(BO3)

Specimens

Localities

Uses