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1 item @ $25.00  
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Acanthite on Quartz

#BN51682
SOLD
Acanthite from San Juan de Rayas mine, Guanajuato, Mexico - BN51682
Acanthite from San Juan de Rayas mine, Guanajuato, Mexico - BN51682

Acanthite on Quartz

#BN51682
Availability
Sold
Size
16 x 7 x 5 cm - Cabinet 
Formula
Ag2S (RRUFF)
Locality
San Juan de Rayas mine, Guanajuato, Mexico
Tagged
sulfide , silver

Large cabinet specimen of mostly crystallized Quartz matrix with choice hoppered habit Acanthite crystals. There are two main groups of Acanthite: one set has a large crystal measuring 2cm and the other in the set is about 1.5cm wide. The flip side has a large 1.1cm crystal and then there are several smaller, all of which are nicely crystallized.

Acanthite

Formula
Ag2S 
Crystal System
Monoclinic 
Crystal Habit
Blocky, Skeletal, Arborescent 
Cleavage
poor to none 
Luster
Metallic 
Color
lead gray, gray, iron black 
Streak
shining black 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2-2.5 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
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