General Information:
Chemical Formula:SnO2
Composition:(Molecular Weight = 150.71 gm)Tin 78.77 %
SnOxygen 21.23 %
O Empirical Formula: SnO2
Environment:Granite pegmatites and alluvial placer deposits.
Locality:Cronwall, Great Britain.
Name Origin:From the Greek kassiteros - "tin."
Physical Properties: Cleavage:[100] Perfect, [110] Indistinct
Color:brown, brownish black, colorless, green, or gray.
Density:6.8 - 7, Average = 6.9
Diaphaniety:Transparent to translucent to opaque
Habits:Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Uniformly indistinguishable crystals forming large masses., Botryoidal - "Grape-like" rounded forms (e.g. . malachite).
Hardness:6-7 - Orthoclase-Quartz
Luminescence:None.
Luster:Adamantine
Streak:brownish white
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