Stephanite

Stephanite has been found in many of the classic silver deposits. Some of the best crystals of Stephanite were found at the Freiberg District, Erzgebirge, Saxony, Germany. Well-formed hexagonal crystals have come from St Andreasberg, Harz Mountains, Saxony, Germany; and another classic European locality is the Příbram region, Bohemia, Czech Republic.

The silver deposits in Potosí Department, Bolivia, have produced fine examples of Stephanite, especially at Porco where it was found in excellent parallel crystal groups. In Mexico, sharp crystal groups have come from Mexico at the Chispas (Pedrazzini) Mine, Arizpe, Sonora; Fresnillo, Zacatecas.

In the U.S., Stephanite was one of the important silver ores at the Comstock Lode in Virginia City, Storey Co., Nevada. In Canada, iridescent columnar crystals of Stephanite came from a one time find in the Husky Mine, Mayo Mining District, Yukon Territory.

Polybasite - Difficult to distinguish, although crystal plates are usually more platy and thinner.
Acanthite - Forms in different crystal habits, is sectile.
Galena - Has better cleavage, heavier.
Tetrahedrite - Not as heavy.