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Minerals - Fluocerite-(Ce) | TerraCollect
Mineral - Fluocerite-(Ce)
Fluocerite-(Ce)
CeF₃
Chemical Properties
Mineral Class
Halides
Toxicity
none
Formula
CeF₃
Unit Cell
a=7,19 c=7,35 Z=6
Physical Properties
Hardness
4.5 - 5
Streak
white
Density
Very Heavy (>6)
Optical Properties
Color
brown
gray
orange
yellow
Birefringence
0,006
Luster
Vitreous,
Greasy
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
Composition
Elements
Mass
ThOâ‚‚
1,56
(Y,Tb,Dy)₂O₃
0,08
Ce₂O₃
42,34
La₂O₃
33,13
Pr₂O₃
3,68
Nd₂O₃
3,12
Sm₂O₃
0,17
Cleavage
unvollkommen
Fracture
conchoidal
Tenacity
Brittle
trigonal
Point Group
Space Group
Habit
blocky,
coarse,
massive,
prismatic,
tabular
Formation
Magmatisch, in Graniten
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Fluocerite-(Ce)
Gd₂O₃
0,08
Fe₂O₃
0,14
MgO
0,01
CaO
0,53
F
36,13
Kasachstan
Groups and Members
Fluocerit-Gruppe
