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Mineralpedia Details for Pyrargyrite

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Pyrargyrite

Pyrargyrite

Named after the Greek pyr, for “fire,” and argyros, for “silver,” in reference to the color and silver in the composition. AN important silver ore, Pyrargyrite can be found in hydrothermal veins both as a primary and secondary mineral and can also be found in oxidized silver deposits. There are hundreds of localities, a few include Germany, Spain, the Czech Republic, the United States, Canada, Bolivia, Mexico, Peru, Chile, and Australia.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/pyrargyrite.pdf

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 
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Pyrargyrite from Cerro de Potosí, Potosí City, Potosí dept., Bolivia

Pyrargyrite
            from Cerro de Potosí, Potosí City, Potosí dept., Bolivia

Deep red, lustrous crystals to 4.5mm.

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Pyrargyrite from Huaron, Peru

Pyrargyrite
            from Huaron, Peru

Deep red crude, as typical of this species, crystal aggregate to 1.8cm.

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Pyrargyrite from San Luis mine, Fresnillo, Zacatacas, Mexico

Pyrargyrite
            from San Luis mine, Fresnillo, Zacatacas, Mexico

Deep red stout, prismatic crystals, the largest being 2cm.

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Pyrargyrite from Molly Gibson mine, Aspen, Pitkin Co., Colorado, United States

Pyrargyrite
            from Molly Gibson mine, Aspen, Pitkin Co., Colorado, United States

Deep ruby-red Pyrargyrite throughout matrix.

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Pyrargyrite from Porco, Potosi, Bolivia

Pyrargyrite
            from Porco, Potosi, Bolivia

Deep red larger 1cm plus areas and a 2mm crystal at the center. Good representative specimen. Associated with other sulfides.

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Pyrargyrite from Pribram, Bohemia, Czech Republic

Pyrargyrite
            from Pribram, Bohemia, Czech Republic

Deep red Pyrargyrite crystal group to 1.2cm.

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Pyrargyrite from Colquechaca, Potosi dept., Bolivia

Pyrargyrite
            from Colquechaca, Potosi dept., Bolivia

Small 1cm single ruby red crystal.

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Pyrargyrite from Freiberg dist., Erzgebirge, Saxony, Germany

Pyrargyrite
            from Freiberg dist., Erzgebirge, Saxony, Germany

Excellent cluster of Pyrargyrite crystals with a almost bluish-metallic adamantine luster and a superb deep cherry-red internal color with many crystals showing good form and terminated ends. Superb piece from a classic locality!

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Pyrargyrite from Cobalt-Gowganda dist., Ontario, Canada

Pyrargyrite
            from Cobalt-Gowganda dist., Ontario, Canada
Special Info
EDS Confirmed

A small matrix specimen of deep red Pyrargyrite. There are about 5 or 6 crystals the longest is 4mm, Associated with Calcite.

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Pyrargyrite from San Guillermo vein, Fresnillo, Zacatacas, Mexico

Pyrargyrite
            from San Guillermo vein, Fresnillo, Zacatacas, Mexico

Solid mass of argentiferous Galena with massive ruby red Pyrargyrite. An ore of Silver.

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