Britholite-(Y)

Overview

(Y,Ca)5(SiO4,PO4)3(OH,F)
Fluorescence: none	Not Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.25 g/cc
Hardness - Mohs	Britholite-(Y) - 5  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	red, brown, black
Streak	light brown

Crystal Properties

Property	Value
Crystal structure	hexagonal - dipyramidal
Cleavage	imperfect
Tenacity	brittle
Fracture	conchoidal
Luster	resinous

Similar Minerals

Dana Number : 52.04.09.02

Class: 52

Group: 52.04

Subgroup: 52.04.09 - silicate apatites

Dana Number	Mineral Name	Formula
52.04.09.02	britholite-(Y)	(Y,Ca)5(SiO4,PO4)3(OH,F)
52.04.09.03	ellestadite-(F)	Ca5(SiO4,PO4,SO4)3(F,OH,Cl)
52.04.09.03	fluorellestadite	Ca5(SiO4,PO4,SO4)3(F,OH,Cl)
52.04.09.07	karnasurtite-(Ce)	(Ce,La,Th)(Ti,Nb)(Al,Fe+3)(Si,P)2O7(OH)4·3(H2O)
52.04.09.08	fluorbritholite-(Ce)	(Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F)

Nickel-Strunz Number : 09.AH.25

Group : 09

Subgroup : AH

Nickel-Strunz Number	Mineral Name	Formula
09.AH.25	britholite-(Y)	(Y,Ca)5(SiO4,PO4)3(OH,F)
09.AH.25	ellestadite-(F)	Ca5(SiO4,PO4,SO4)3(F,OH,Cl)
09.AH.25	fluorbritholite-(Ce)	(Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F)
09.AH.25	fluorellestadite	Ca5(SiO4,PO4,SO4)3(F,OH,Cl)

Specimens

Localities

Uses