General Information:
Chemical Formula:
Na5Zr2Si6O18(Cl,OH)·2(H2O)
IMA Status:
Approved IMA 1979
Physical Properties:
Cleavage:
[110] Perfect, [010] Good, [001] Distinct
Color:
brownish yellow or greenish yellow.
Density:
2.88
Diaphaniety:
Transparent to Translucent
Hardness:
5-5.5 - Apatite-Knife Blade
Luster:
Vitreous (Glassy)
Streak:
white
More details...