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Criteria for the detection of hydrothermal ecosystem faunas in ores of massive sulfide deposits in the Urals

Citation

Maslennikov, VV and Ayupova, NR and Maslennikova, SP and Lein, AY and Tseluiko, AS and Danyushevsky, LV and Large, RR and Simonov, VA, Criteria for the detection of hydrothermal ecosystem faunas in ores of massive sulfide deposits in the Urals, Lithology and Mineral Resources, 52, (3) pp. 173-191. ISSN 0024-4902 (2017) [Refereed Article]


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DOI: doi:10.1134/S002449021703004X

Abstract

The ore-formational, ore-facies, lithological, and mineralogical-geochemical criteria are defined for the detection of hydrothermal ecosystem fauna in ores of the volcanic-hosted massive sulfide deposits in the Urals. Abundant mineralized microfauna is found mainly in massive sulfide mounds formed in the jasperous basalt (Buribai, Priorsk, Yubileinoe, Sultanov), rhyolite–basalt (Yaman-Kasy, Blyava, Komosomol’sk, Sibai, Molodezhnoe, Valentorsk), and the less common serpentinite (Dergamysh) formations of the Urals (O–D2). In the ore-formational series of the massive sulfide deposits, probability of the detection of mineralized fauna correlates inversely with the relative abundance of felsic volcanic rocks underlying the ores. This series is also marked by a gradual disappearance of colloform pyrite, marcasite, isocubanite, pyrrhotite, and pyrite pseudomorphoses after pyrrhotite; increase of the amount of bornite, fahlores, and barite; decrease of contents of Se, Te, Co, and Sn in chalcopyrite and sphalerite; and decrease of Tl, As, Sb, and Pb in the colloform pyrite. Probability of the detection of mineralized fauna in the morphogenetic series of massive sulfide deposits decreases from the weakly degraded sulfide mounds to the clastic stratiform deposits. The degradation degree of sulfide mounds and fauna preservation correlates with the attenuation of volcanic intensity, which is reflected in the abundance of sedimentary and volcanosedimentary rocks and the depletion of effusive rocks in the geological sections.

Item Details

Item Type:Refereed Article
Keywords:hydrothermal ecosystem faunas, massive sulfide deposits, Urals
Research Division:Earth Sciences
Research Group:Geochemistry
Research Field:Exploration Geochemistry
Objective Division:Mineral Resources (excl. Energy Resources)
Objective Group:Mineral Exploration
Objective Field:Mineral Exploration not elsewhere classified
Author:Danyushevsky, LV (Professor Leonid Danyushevsky)
Author:Large, RR (Professor Ross Large)
ID Code:121659
Year Published:2017
Web of Science® Times Cited:1
Deposited By:CODES ARC
Deposited On:2017-10-09
Last Modified:2017-10-09
Downloads:0

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