Ferriallanite-(La)

Overview

(Ca,La)(Fe+3AlFe+2)(Si2O7)(SiO4)O(OH)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.208 g/cc
Hardness - Mohs	Ferriallanite-(La) - 6  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	black
Streak	brown

Crystal Properties

Property	Value
Crystal structure	monoclinic - prismatic
Cleavage	none
Tenacity	brittle
Fracture	conchoidal
Luster	vitreous

Similar Minerals

Dana Number : 56.02.07.02

Class: 56

Group: 56.02

Subgroup: 56.02.07 - allanite

Dana Number	Mineral Name	Formula
56.02.07.01	epistolite	(Na,Ca,Fe)2((Na,Ti)4(Nb2(O,H2O)4Si4O14)(OH,F)2)·2(H2O)
56.02.07.02	ferriallanite-(La)	(Ca,La)(Fe+3AlFe+2)(Si2O7)(SiO4)O(OH)
56.02.07.02	murmanite	Na2{(Na,Ti,Nb)4[Ti2(O,H2O)4Si4O14](OH,F)2}
56.02.07.03	shkatulkalite	((Na,Mn,Ca,[])4(Nb2(O,H2O)4Si4O14)(OH,F)2)·2(H2O,[])

Nickel-Strunz Number : 09.BG.05b

Group : 09

Subgroup : BG

Nickel-Strunz Number	Mineral Name	Formula
09.BG.05b	allanite-(Ce)	(Ce,Ca,Y)2(Al,Fe+3)3(SiO4)3(OH)
09.BG.05b	allanite-(Nd)	(Ca,Nd)(Al2,Fe+2)(Si2O7)(SiO4)(O)(OH)
09.BG.05b	åskagenite-(Nd)	Mn+2NdAl2Fe+3(Si2O7)(SiO4)O2
09.BG.05b	ferriallanite-(La)	(Ca,La)(Fe+3AlFe+2)(Si2O7)(SiO4)O(OH)

Specimens

Localities

Uses