General Information:
Chemical Formula:
H3BO3
Composition:
(Molecular Weight = 27.82 gm)
Boron 38.86 % B
Hydrogen 3.62 % H
Oxygen 57.52 % O
Empirical Formula:
B(OH)
Environment:
Volcanic fumaroles and hot springs.
Locality:
Sasso and the Tuscan lagoons, between Volterra and Massa Marittima, Italy.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[001] Perfect
Color:
white, gray, yellow, or brown.
Density:
3.3 - 3.5, Average = 3.4
Diaphaniety:
Transparent
Habits:
Platy - Sheet forms (e.g. micas)., Encrustations - Forms crust-like aggregates on matrix., Tabular - Form dimensions are thin in one direction.
Hardness:
1 - Talc
Luminescence:
Fluorescent.
Luster:
Vitreous - Pearly
Streak:
white
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