Native antimony emplaced by methane-rich hydrothermal fluid in an orogenic fault-zone

Jébrak, Michel; Lebrun, Charline; André-Mayer, Anne-Sylvie et Simard, Marjorie (2017). « Native antimony emplaced by methane-rich hydrothermal fluid in an orogenic fault-zone ». Terra Nova, 29, pp. 401-408.

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Résumé

Antimony-rich gold deposits represent a subclass of orogenic hydrothermal systems. The study of the Lapa gold deposit in the Abitibi greenstone belt shows that antimony occurs during two different stages: (1) as early prograde Sb–Ni disseminated sulphides in talc schists, associated with CO2-bearing fluids, and (2) as a late native antimony association, associated with methane-bearing fluids indicating a reducing environment. Methane could be related to the serpentinization of the ultramafic rocks of the Pich�e Group hosting the Lapa deposit. Several deposits display the same methane antimony association along fault zones.

Type:	Article de revue scientifique
Mots-clés ou Sujets:	Gold, Antimony, Archean, ore deposit, Quebec
Unité d'appartenance:	Faculté des sciences > Département des sciences de la Terre et de l'atmosphère
Déposé par:	Michel Jébrak
Date de dépôt:	09 août 2021 08:27
Dernière modification:	09 août 2021 08:27
Adresse URL :	http://archipel.uqam.ca/id/eprint/14393

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