a mineral, silver antimony sulfide, Ag 5 SbS 4 : an ore of silver.

1840–50; named after Stephan, Archduke of Austria (died 1867); see -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica


a sulfosalt mineral, silver antimony sulfide (Ag5SbS4), that occurs as black, lustrous, orthorhombic crystals, fine particles, or masses in small amounts in many silver veins. At one time an important silver ore in the Comstock Lode, Nevada, it has been found in other parts of the western United States and in the Czech Republic, Germany, Norway, Bolivia, and Mexico. For detailed physical properties, see sulfosalt (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Silver was also produced from ores including tetrahedrite, stephanite, and pyrargyrite.
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