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Minerals - Synchysite-(Ce) | TerraCollect
Mineral - Synchysite-(Ce)
Synchysite-(Ce)
CaCe(CO₃)₂F
Chemical Properties
Mineral Class
Carbonates
Toxicity
radioactive
Formula
CaCe(CO₃)₂F
Unit Cell
a=12.33 b=7.11 c=18.74 β=103° Z=12
Physical Properties
Hardness
4.5
Streak
white
Density
Heavy (3,5-6)
Optical Properties
Color
brown
gray
orange
yellow
green
Birefringence
0.096
Luster
Vitreous
Transparency
translucent,
transparent,
opaque
Pleochroism
Geomineralogical Properties
Crystal System
Composition
Elements
Mass
COâ‚‚
27.95
SiOâ‚‚
0.14
Y₂O₃
0.45
La₂O₃
9.96
Ce₂O₃
22.34
Pr₂O₃
2.27
Nd₂O₃
12.73
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Fracture
splintery,
uneven
Tenacity
Brittle
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
C2/c (15)
Habit
dipyramidal,
prismatic,
tabular
Formation
Secondarily, through hydrothermal REE-rich alteration in alkaline magmatic rocks, particularly in carbonatites and granitic pegmatites
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Synchysite-(Ce)
Sm₂O₃
1.79
Gd₂O₃
1.27
CaO
18.14
F
5.73
O=Fâ‚‚
2.41
France (Palache et al. 1952)
Groups and Members
Synchysite-Group
