Formula: CuPbAsS3
Sulphosalt, bournonite group and forms a series with bournonite
Specific gravity: 5.38 to 5.44
Hardness: 3
Streak: Black
Colour: Lead grey, dark lead grey, black
Common impurities: Ag,Zn,Fe,Sb

Hydrothermal environments


At the Bleikvassli Mine, Bleikvasslia, Hemnes, Nordland, Norway, seligmannite is associated with tennantite, jordanite and dufrénoysite (HOM).

At the Palomo Mine, Huachocolpa District, Huancavelica Province, Huancavelica, Peru, seligmannite crystals to 1 mm have been found rarely covering galena or sphalerite surfaces, associated with younger realgar crystals and orpiment (Minrec 39.2.99).

At the type locality, the Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland, seligmannite occurs in cavities in dolostone, associated with tennantite, sphalerite, pyrite, dufrénoysite, rathite and baumhauerite (HOM).

At the Bingham Mining District, Oquirrh Mountains, Salt Lake county, Utah, USA, a specimen has been found consisting of a small mass of granular pyrite containing two cavities whose walls of crystallised pyrite are coated in turn with sphalerite and tennantite. Last to form in the cavity are seligmannite crystals up to 3 mm across (AM 13.402-405 ).

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