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0 item @ $0.00  

Topaz (sand)

#BAC64049

Topaz (sand)

#BAC64049
Availability
Sold
Size
2.5 x 4 x 2.5 cm - Miniature 
Formula
Al2SiO4F2 (RRUFF)
Locality
Thomas Range, Juab Co., Utah, United States

I have never seen one of these. They are similar to the sand-included Calcite from South Dakota. Instead it is Topaz with included very fine-grained sand and the Topaz has retained some of its luster. The terminations are irregular only and not broken.

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
William & Anne Cook Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Topaz
On Dakota Matrix
Other Available Topaz
WebMineral
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Mindat
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