General Information:
Chemical Formula:
Na6(Ca,Mn,Fe++)Zr[Si6O18]
Composition:
(Molecular Weight = 733.35 gm)
Sodium 18.81 % Na
Calcium 2.73 % Ca
Zirconium 12.44 % Zr
Manganese 2.25 % Mn
Iron 1.52 % Fe
Silicon 22.98 % Si
Oxygen 39.27 % O
Empirical Formula:
Na6Ca0.5Mn2+0.3Fe2+0.2ZrSi6O18
Environment:
Alteration product of lomonosovite and barian lamprophyllite found in a drill core.
IMA Status:
Approved IMA 1974
Locality:
Mt. Koashva, Khibiny massif, Kola Peninsula, Russia.
Name Origin:
Named for its composition (Zircon, Si, Na).
Physical Properties:
Cleavage:
None
Color:
colorless or pale yellow gray.
Density:
2.9
Diaphaniety:
Transparent
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Streak:
white
More details...