Franconite

Overview

Na2Nb4O11·9(H2O)
Fluorescence: yellow white under SW and LW	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	2.72 g/cc
Hardness - Mohs	Franconite - 4  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	white
Streak	white

Crystal Properties

Property	Value
Crystal structure	monoclinic - unknown
Cleavage	parting
Tenacity	-
Fracture	-
Luster	vitreous, silky

Similar Minerals

Dana Number : 08.06.01.01

Class: 08

Group: 08.06

Subgroup: 08.06.01 - franconite

Dana Number	Mineral Name	Formula
08.06.01.01	franconite	Na2Nb4O11·9(H2O)
08.06.01.02	hochelagaite	(Ca,Na,Sr)Nb4O11·8(H2O)

Nickel-Strunz Number : 04.FM.15

Group : 04

Subgroup : FM

Nickel-Strunz Number	Mineral Name	Formula
04.FM.15	franconite	Na2Nb4O11·9(H2O)
04.FM.15	hochelagaite	(Ca,Na,Sr)Nb4O11·8(H2O)

Specimens

Localities

Uses