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1 item @ $25.00   30:00
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Simpsonite

#41138
SOLD
Simpsonite from Alto do Giz pegmatite, Rio Grande do Norte, Brazil - 41138
Simpsonite from Alto do Giz pegmatite, Rio Grande do Norte, Brazil - 41138

Simpsonite

#41138
Availability
Sold
Size
1.5 x 1 x 0.6 cm - Thumbnail 
Formula
Al4Ta3O13(OH) (RRUFF)
Locality
Alto do Giz pegmatite, Rio Grande do Norte, Brazil

Orange partial crystal showing one face.

Simpsonite

Formula
Al4Ta3O13(OH) 
Crystal System
Trigonal 
Crystal Habit
Euhedral Crystals, Prismatic, Striated 
Cleavage
None, None, None 
Luster
Vitreous - Adamantine 
Color
brownish yellow, colorless, white, light brown, light yellow 
Streak
white 
Class
Trigonal - Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7-7.5 

Data courtesy of Webmineral.

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