Pyrrhotite mineralization as a search criterion for sulfide deposits at sediment-covered spreading centers


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Pyrrhotite ores forming the hydrothermal vents of the Hydrothermal Hills in the Southern Trough of the Guaymas depression were studied. A series of features pointing to the occurrence of surface and buried sulfide deposits of pyrrhotite mineralization was revealed: the presence of pyrrhotite associations to hydrocarbons of oil series; low concentrations of Cu, Zn, and Pb; the enrichment of sulfur of pyrrhotite and hydrogen sulfide of hydrothermal solutions in heavy 34S isotope by 5–7%; and the heavy isotope composition of carbon in naphthoid compounds. The results obtained allow one to suggest searching for large sulfide deposits at active rifts of high spreading and sedimentation rates, i.e., at near-continental rifts of the humid zone of avalanche sedimentation.

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O. Bogdanova

Shirshov Institute of Oceanology

编辑信件的主要联系方式.
Email: olgabogdanova59@yandex.ru
俄罗斯联邦, Nakhimovskii pr. 36, Moscow, 117218

A. Lein

Shirshov Institute of Oceanology

Email: olgabogdanova59@yandex.ru
俄罗斯联邦, Nakhimovskii pr. 36, Moscow, 117218

O. Dara

Shirshov Institute of Oceanology

Email: olgabogdanova59@yandex.ru
俄罗斯联邦, Nakhimovskii pr. 36, Moscow, 117218

E. Ozhogina

All-Russia Scientific-Research Institute of Mineral Resources

Email: olgabogdanova59@yandex.ru
俄罗斯联邦, Staromonetny per. 31, Moscow, 109017

A. Lisitzin

Shirshov Institute of Oceanology

Email: olgabogdanova59@yandex.ru
俄罗斯联邦, Nakhimovskii pr. 36, Moscow, 117218

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