General Information:
Chemical Formula:
NaSb+++++O3
Empirical Formula:
Na(SbO3)
Environment:
The result of deep weathering of stibnite.
IMA Status:
Approved IMA 1992
Locality:
The Cetine mine, approximately 20 km SW of Sienna, Tuscany, Italy.
Name Origin:
For Dr. Giancarlo Brizzi (1936-1992) who discovered the mineral.
Physical Properties:
Cleavage:
[001] Perfect
Color:
colorless.
Density:
4.8 - 4.95, Average = 4.87
Diaphaniety:
Transparent
Habits:
Platy - Sheet forms (e.g. micas)., Encrustations - Forms crust-like aggregates on matrix.,
Hardness:
2 - Gypsum
Luminescence:
Non-fluorescent.
Luster:
Pearly
Streak:
white
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