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0 item @ $0.00  

Cassiterite

#51031

Cassiterite

#51031
Availability
Sold
Size
5.5 x 4.5 x 2 cm - Sm Cabinet 
Formula
SnO2 (RRUFF)
Locality
Rock Hill mine, St. Austell dist., Cornwall, England
Tagged
tin

At first glance, you might think this as another ugly mineral. But upon further examination under the scope you would see preety good brown, twined crystals of Cassiterite to 5mm! And it is from Cornwall, one of the greatest tin mining districts the worl has ever known.

Cassiterite

Formula
SnO2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Massive, Botryoidal 
Cleavage
Perfect, Indistinct, None 
Luster
Adamantine 
Color
brown, brownish black, colorless, green, gray 
Streak
brownish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Irregular 
Hardness
6-7 

Data courtesy of Webmineral.

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