Mineral - Belovite-(La)
Belovite-(La)
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
NaLaSr₃(PO₄)₃F
Unit Cell
a=9.65 c=7.17 Z=2
Physical Properties
Hardness
5
Streak
white
Density
Heavy (3,5-6)
Cleavage
Fracture
conchoidal
Tenacity
Brittle
Optical Properties
Color
yellowgreen
Birefringence
0.018
Luster
Vitreous
Transparency
translucent
Pleochroism
Geomineralogical Properties
Crystal System
trigonal
Point Group
rhombohedral - 3
Space Group
P 3 (147)
Habit
tabular
Formation
Magmatic in pegmatites
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Belovite-(La), Belovite
Composition
Elements
Mass
SO₃
0.03
P₂O₅
28.30
SiO₂
0.24
ThO₂
0.43
La₂O₃
13.08
Ce₂O₃
8.15
Pr₂O₃
0.30
Nd₂O₃
0.30
Sm₂O₃
0.03
Gd₂O₃
0.01
Y₂O₃
0.01
CaO
0.50
SrO
40.09
BaO
2.35
Na₂O
4.09
F
2.90
H₂O
0.22
Russia (Pekov et al. 1996)
Groups and Members
Belovite-Group
Name and first discovery: Named after the Russian mineralogist Nikolai Vasil'evich Belov (1891-1982). First described in 1996.
Chemism:
Synonyms:
Varieties:
Abbreviation: Blv-La
Literature
Pekov, I. V., Kulikova, I. M., Kabalov, Y. K., Eletskaya, O. V., Chukanov, N. V., Menshikov, Y. P., & Khomyakov, A. P. (1996). Belovite-(La), Sr3Na (La, Ce)(PO4) 3 (F, OH), a new rare earth mineral in the apatite group. Zap. Vser. Mineral.Obshchest, 3, 101-109.