Formula: Cu3SbS4
Sulphosalt, stannite group, forms a series with luzonite; copper and antimony bearing mineral
Specific gravity: 4.635
Hardness: 3 to 4
Streak: Black
Colour: Deep pinkish brown
Common impurities: Fe,As,Bi

Hydrothermal environments

Famatinite occurs in copper deposits formed at low to medium temperatures. It is generally absent from copper deposits of the high temperature, pyrometasomatic (Formed by metasomatic changes in rocks, principally in limestone, at or near intrusive contacts, under the influence of magmatic emanations and high to moderate temperature and pressure) or medium temperature porphyry type. Associated minerals include pyrite, enargite, tetrahedritetennantite, chalcopyrite and covellite, and more rarely sphalerite, bismuthinite, silver, gold and marcasite, with quartz and baryte as common gangue minerals. Alunite is also found in some places (AM 42.766-779. HOM).


The type locality is Sierra de Famatina, Famatina Department, La Rioja Province, Argentina.

At Brixlegg, Inn valley, North Tyrol, Tyrol, Austria, tetrahedritetennantite veins from the historic silver mines host a newly formed mineral assemblage of enargite/luzonite-famatinite, chalcostibite, pyrite and sphalerite, with or without stibnite, resulting from breakdown of the ore minerals (EJM.25.155-163).

At the Gunung Pongkor mine, Bogor Regency, West Java Province, Indonesia, the goldsilver deposit is the largest low-sulphidation epithermal precious-metal deposit in Indonesia. It consists of nine major quartzadularia–carbonate veins with a very low sulphide content. The association of sulphides is the main gold carrier and is dominated by pyrite, chalcopyrite and sphalerite, with or without galena. Minor phases are silver-rich sulphides and sulphosalts, such as acanthiteaguilarite, polybasitepearceite, famatinite, proustite and tetrahedrite. Gold occurs as a gold-silver alloy and as uytenbogaardtite. Chalcocite, native gold, stromeyerite, rare covellite and mckinstryite are the latest phases, of supergene origin (CM 41.185-200).

The Pardos deposit, Pardos, Guadalajara, Castile-La Mancha, Spain, consists of a system of copper-silver veins. The ore assemblage and textures reflect vertical zoning. The lower level contains tetrahedritetennantite, famatiniteluzonite, pyrite and chalcopyrite, and minor galena and sphalerite. The upper level exhibits an association of tetrahedrite, argentian tetrahedrite, freibergite, pyrargyrite, stephanite, polybasite and acanthite (CM 48.415-430).

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