General Information:
Chemical Formula:
SrNa2Al4Si4O16
Composition:
(Molecular Weight = 609.86 gm)
Sodium 7.54 % Na
Strontium 14.37 % Sr
Aluminum 17.70 % Al
Silicon 18.42 % Si
Oxygen 41.98 % O
Empirical Formula:
SrNa2Al4Si4O16
Environment:
Basic tuff xenoliths.
IMA Status:
Approved IMA
Locality:
Rendai, Kochi City, Japan.
Name Origin:
Named for its composition (Strontium, Na, Al, Si).
Physical Properties:
Cleavage:
[100] Good, [001] Good
Color:
white.
Density:
2.95
Diaphaniety:
Transparent
Hardness:
6.5 - Pyrite
Luster:
Vitreous (Glassy)
Streak:
white
More details...