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Mineral - Bakhchisaraitsevite

BakhchisaraitseviteNa₂Mg₅(PO₄)₄ · 7H₂O
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
Na₂Mg₅(PO₄)₄ · 7H₂O
Unit Cell
a=8.31 b=12.91 c=17.49 β=102° Z=4
Physical Properties
Hardness
2 - 2.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Perfect after {001}
Fracture
Tenacity
Brittle
Optical Properties
Color
whiteyellowcolorless
Birefringence
0.005
Luster
Vitreous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
P2 1 /c (14)
Habit
leafy, book-shaped, tabular
Formation
Through alteration in magmatic carbonatites
Paragenesis
Twinning
Rarity
Rare
Synonyms
Bakhchisaraitsevite
Composition
Elements
Mass
Na₂O
9.17
MgO
29.40
CaO
0.07
MnO
0.33
FeO
0.84
P₂O₅
41.57
H₂O
18.62
Russia (Liferovich et al. 2000)

Name and first discovery: Named after the Russian crystallographer Alexander Yuryevich Bakhchisaraitsev (1947-1998)

Chemism: 

Synonyms: 

Varieties: 

Abbreviation: Bkc

 

Famous locations

(TL) Type locality                           (analysis) Chemical element distribution, see above

 

Russia

(TL) (Analysis) Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia

 

Chile

Cerro Mejillones, Mejillones, Antofagasta, Chile

 

 

Literature

Liferovich, R. P., Laajoki, K., Gehör, S., Pakhomovsky, Y. A., Bogdanova, A. N., Sorokhtina, N. V., ... & Massa, W. (2000). Bakhchisaraitsevite, Na 2 Mg 5 [PO 4] 4- 7H 2 O, a new mineral from hydrothermal assemblages related to phoscorite-carbonatite complex of the Kovdor massif, Russia. NeuesJahrbuch Fur Mineralogie, Monatshefte, 9, 402-418.