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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