Harkerite

Overview

Ca24Mg8Al2(SiO4)8(BO3)6(CO3)10·2(H2O)
Fluorescence: weak red under LW	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.959 g/cc
Hardness - Mohs	Harkerite - -  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	colorless
Streak	white

Crystal Properties

Property	Value
Crystal structure	trigonal - hexagonal scalenohedral
Cleavage	none
Tenacity	-
Fracture	-
Luster	vitreous, glassy

Similar Minerals

Dana Number : 17.01.09.01

Class: 17

Group: 17.01

Subgroup: 17.01.09 - harkerite

Dana Number	Mineral Name	Formula
17.01.09.01	harkerite	Ca24Mg8Al2(SiO4)8(BO3)6(CO3)10·2(H2O)

Nickel-Strunz Number : 06.AB.70

Group : 06

Subgroup : AB

Nickel-Strunz Number	Mineral Name	Formula
06.AB.70	harkerite	Ca24Mg8Al2(SiO4)8(BO3)6(CO3)10·2(H2O)

Specimens

Localities

Uses