Niocalite

Overview

Ca14Nb2(Si2O7)4O6F2
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	3.32 g/cc
Hardness - Mohs	Niocalite - 6  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	yellow
Streak	white

Crystal Properties

Property	Value
Crystal structure	monoclinic - domatic
Cleavage	none
Tenacity	brittle
Fracture	conchoidal
Luster	vitreous, glassy

Similar Minerals

Dana Number : 56.02.04.06

Class: 56

Group: 56.02

Subgroup: 56.02.04 - cuspidine-wohlerite

Dana Number	Mineral Name	Formula
56.02.04.02	burpalite	Na2CaZrSi2O7F2
56.02.04.03	cuspidine	Ca4Si2O7(F,OH)2
56.02.04.05	wohlerite	NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
56.02.04.06	niocalite	Ca14Nb2(Si2O7)4O6F2
56.02.04.07	hiortdahlite	(Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2
56.02.04.09	hainite	Na4Ca8(Ti,Zr,Mn,Fe)3Si8O28F8
56.02.04.10	janhaugite	(Na,Ca)3(Mn+2,Fe+2)3(Ti+4,Zr,Nb)2Si4O15(OH,F,O)3
56.02.04.12	komarovite	(Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2·3.5(H2O)
56.02.04.13	natrokomarovite	Na6CaNb6(Si4O12)F2·4(H2O)

Nickel-Strunz Number : 09.BE.17

Group : 09

Subgroup : BE

Nickel-Strunz Number	Mineral Name	Formula
09.BE.17	burpalite	Na2CaZrSi2O7F2
09.BE.17	cuspidine	Ca4Si2O7(F,OH)2
09.BE.17	hiortdahlite	(Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2
09.BE.17	janhaugite	(Na,Ca)3(Mn+2,Fe+2)3(Ti+4,Zr,Nb)2Si4O15(OH,F,O)3
09.BE.17	niocalite	Ca14Nb2(Si2O7)4O6F2
09.BE.17	wohlerite	NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2

Specimens

Localities

Uses