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Quartz var. amethyst

#54217
SOLD
Quartz from Elk Park, Jefferson Co., Montana, United States - 54217
Quartz from Elk Park, Jefferson Co., Montana, United States - 54217

Quartz var. amethyst

#54217
Availability
Sold
Size
4 x 2.6 x 2.5 cm - Miniature 
Formula
SiO2 (RRUFF)
Locality
Elk Park, Jefferson Co., Montana, United States

The well-known, expert collector Chris van Laer collected this specimen from a miarolitic cavity in 1987. It's a nice specimen with included Kaolinite(?) in the amethyst tip.  The termination is complex with a rich amethyst color, which fades to a smoky color at the base. 

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
7 

Data courtesy of Webmineral.

Collection
Chris van Laer Collection
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