Sazykinaite-(Y)

General Information:
 Chemical Formula:
Na5YZrSi6018·6(H2O)
 Composition:
(Molecular Weight = 859.67 gm)
Sodium 13.37 % Na
Yttrium 10.34 % Y 
Zirconium 10.61 % Zr
Silicon 19.60 % Si
Hydrogen 1.41 % H 
Oxygen 44.67 % O 
 Empirical Formula:
Na5YZrSi6O18·6(H2O)
 Environment:
In hyperagpaitic pegmatites.
 IMA Status:
Approved IMA
 Locality:
Mt. Koashva, SE part of the Khibina alkaline massif, Kola Peninsula, Russia.
 Name Origin:
Named after Ludmila B. Sazykina (1934- ), a Kola artist.
Physical Properties:
 Cleavage:
[012] Imperfect
 Color:
light green or yellow.
 Density:
2.67 - 2.71, Average = 2.69
 Diaphaniety:
Transparent
 Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., ,
 Hardness:
5 - Apatite
 Luminescence:
Fluorescent, Short UV=bright green.
 Luster:
Vitreous (Glassy)
 Streak:
white
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