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Quartz var. amethyst with Anhydrite

#BN45336

Quartz var. amethyst with Anhydrite

#BN45336
Availability
Sold
Size
13 x 10 x 5 cm - Cabinet 
Formula
SiO2 (RRUFF)
Locality
Rio Grande do Sul, Brazil

Large cabinet specimen with light purple amethyst surrounded by long, bladed Anhydrite crystals. A very pleasant and eye catching specimen.

Quartz

Formula
SiO2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Druse, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, violet, gray, yellow 
Streak
white 
Class
Trigonal - Trapezohedral 
Fracture
Conchoidal 
Hardness

Data courtesy of Webmineral.

Collection
Dr. Buford L. Nichols Collection
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