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Pyrargyrite with Xanthoconite(?)

#60912
Pyrargyrite from San Luis mine, Fresnillo, Zacatacas, Mexico - 60912
Pyrargyrite from San Luis mine, Fresnillo, Zacatacas, Mexico - 60912

Pyrargyrite with Xanthoconite(?)

#60912
Availability
Available
Price
$40.00
Size
1.3 x 1.4 x 0.9 cm - Thumbnail 
Formula
Ag3SbS3 (RRUFF)
Locality
San Luis mine, Fresnillo, Zacatacas, Mexico
Tagged
sulfide , silver

Pyrargyrite crystals to 8mm with orange crystals of Xanthoconite. Truthfully, I did not notice the orange crystals until I photographed this specimen. These crystals fit the ID of  Xanthoconite well. They stuck out well and look much like Xanthoconite. So either the mineral has not been reported at Fresnillo or the specimen is from San Martin or Bote.

Pyrargyrite

Formula
Ag3SbS3 
Crystal System
Trigonal 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
Poor, None, None 
Luster
Sub Metallic 
Color
deep red, red gray 
Streak
cherry red 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Conchoidal 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Arnold G Hampson Collection
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