General Information:
Chemical Formula:
Na2Si4O9
Composition:
(Molecular Weight = 302.32 gm)
Sodium 15.21 % Na
Silicon 37.16 % Si
Oxygen 47.63 % O
Empirical Formula:
Na2Si4O9
Environment:
Miarolytic cavites in Ta-Nb-Be pegmatites.
IMA Status:
Approved IMA
Locality:
Altai No. 3 pegmatite, Ertixi River, Fuyun, Xinjiang Autonomous Region, China.
Name Origin:
Named for the locality.
Physical Properties:
Cleavage:
None
Color:
colorless or white.
Density:
2.35
Diaphaniety:
Transparent
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., ,
Hardness:
5.8-6.5
Luster:
Vitreous (Glassy)
Streak:
white
More details...