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Mineralpedia Details for Stephanite

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Stephanite

Stephanite

Formula
Ag5SbS4 
Crystal System
Orthorhombic 
Crystal Habit
Pseudo Hexagonal, Tabular, Massive 
Cleavage
Imperfect, Poor, None 
Luster
Metallic 
Color
lead gray, black 
Streak
black 
Class
Orthorhombic - Pyramidal 
Fracture
Sub Conchoidal 
Hardness
2-2.5 
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Stephanite from Zaca mine, Alpine Co., California, United States

Stephanite
            from Zaca mine, Alpine Co., California, United States

Superb 1mm Stephanite crystal in vug with other sulfides.

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Stephanite from Cobalt-Gowganda dist., Ontario, Canada

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

Black prismatic crystals the longest to about 4mm.

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Stephanite from Jachymov, Erzgegirge, Bohemia, Czech Republic

Stephanite
            from Jachymov, Erzgegirge, Bohemia, Czech Republic

Steely grey tabular crystals of Stephanite to 1mm.

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Stephanite from Freiberg dist., Erzgebirge, Saxony, Germany

Stephanite
            from Freiberg dist., Erzgebirge, Saxony, Germany

Silvery prismatic, unusually lustrous Stephanite crystal 2.5cm long, nicely terminated and set-off nicely by white drusy Quartz. The specimen sits naturally perfect without aid. I recall an article by Dr. Terry Wallace, which mentioned that Stephanite usually does not hold its luster over the years. Looking at photos in-print, all have a duller luster than this specimen. Carries an original Brian Loyd Minerals tag.

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Stephanite from Santo Nino vein, Fresnillo, Zacatacas, Mexico

Stephanite
            from Santo Nino vein, Fresnillo, Zacatacas, Mexico

Heavy rich mass of sulfide of mostly Galena and Pyrargyrite with flat prismatic, striated very nice crystals of Stephanite to 1cm.

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