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Minerals - Fluorcaphite | TerraCollect

Mineral - Fluorcaphite

FluorcaphiteCa(Sr,Na,Ca)(Ca,Sr,REE)₃(PO₄)₃(F,OH)

Chemical Properties

Mineral Class

Phosphates

Toxicity

none

Formula

Ca(Sr,Na,Ca)(Ca,Sr,REE)₃(PO₄)₃(F,OH)

Unit Cell

a=9,49 c=7,00 Z=2

Physical Properties

Hardness

5

Streak

white

Density

Optical Properties

Color

yellowcolorless

Birefringence

0,012

Luster

Vitreous

Transparency

translucent,

transparent

Pleochroism

Geomineralogical Properties

Crystal System

hexagonal

Composition

Elements

Mass

P₂O₅

36,23

SiO₂

0,57

La₂O₃

2,61

Ce₂O₃

4,78

Pr₂O₃

0,34

Nd₂O₃

1,48

Sm₂O₃

0,14

Cleavage

Fracture

Tenacity

Brittle

Point Group

Space Group

Habit

coarse, granular, massive, prismatic

Formation

Magmatisch, in Miarolen von alkalischen Pegmatiten

Paragenesis

Twinning

Rarity

Rare

Synonyms

Fluorcaphite

CaO

30,46

SrO

20,78

BaO

0,03

Na₂O

1,74

F

2,17

H₂O

0,52

Russland