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Topaz

#BN52936

Topaz

#BN52936
Availability
Available
Price
$40.00
Size
5 x 4 x 3 cm - Miniature 
Formula
Al2SiO4F2 (RRUFF)
Locality
Teofilo Otoni, Minas Gerais, Southeast Region, Brazil
Tagged
pegmatite mineral

A colorless Topaz termination with complex second order faces along the prism. Many natural imperfections. Good cleavage faces are seen at the base. 

Topaz

Formula
Al2SiO4F2 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Coarse, Prismatic, Massive - Granular 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale blue, yellow, yellowish brown, red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
Mineralpedia
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WebMineral
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