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Elbaite on Albite

#14271

Elbaite on Albite

#14271
Availability
Sold
Size
4.5 x 7 x 4 cm - Sm Cabinet 
Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 (RRUFF)
Locality
Pederneira mine, Sao Jose da Safira, Minas Gerais, Brazil

This specimen is mostly Albite variety clevelandite which occurs as white to faint blue platy crystals to 3cm in a large rosette with fine, needle-like micro Tourmaline Elbaite crystals.

Elbaite

Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Crystal System
Trigonal 
Crystal Habit
Striated, Prismatic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue, colorless, green, yellow, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Sub Conchoidal 
Hardness
7.5 

Data courtesy of Webmineral.

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