N. P. Safina

Institute of Mineralogy

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

ВВ

В. В. Масленников

Institute of Mineralogy

Ivan A. Blinov

Institute of Mineralogy

Irina Yu. Melekestseva

Institute of Mineralogy

N. R. Ayupova

Institute of Mineralogy

СА

С. А. Садыков

Institute of Mineralogy

Ross R. Large

University of Tasmania

L Danyushevsky

University of Tasmania

V. A. Kotlyarov

Institute of Mineralogy

НН

Н. Н. Анкушева

Institute of Mineralogy

Paolo Nimis

University of Padua

Cooperative Institutions

Institute of Mineralogy

Russian Academy of Sciences

South Ural State University

Siberian Branch of the Russian Academy of Sciences

University of Tasmania

United States Geological Survey

Zavaritsky Institute of Geology and Geochemistry

South Ural State Humanitarian Pedagogical University

Lomonosov Moscow State University

University of Padua

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Sulfide Breccias from the Semenov-3 Hydrothermal Field, Mid-Atlantic Ridge: Authigenic Mineral Formation and Trace Element Pattern

Minerals (2018)

Irina Yu. Melekestseva В. В. Масленников N. P. Safina Paolo Nimis S. O. Maslennikova

The aim of this paper is the investigation of the role of diagenesis in the transformation of clastic sulfide sediments such as sulfide breccias from the Semenov-3 hydrothermal field (Mid-Atlantic Ridge). The breccias are composed of marcasite–pyrite clasts enclosed in a barite–sulfide–quartz matrix. Primary hydrothermal sulfides occur as colloform, fine-crystalline, porous and radial marcasite–pyrite clasts with inclusions or individual clasts of chalcopyrite, sphalerite, pyrrhotite, bornite, barite and rock-forming minerals. Diagenetic processes are responsible for the formation of more diverse authigenic mineralization including framboidal, ovoidal and nodular pyrite, coarse-crystalline pyrite and marcasite, anhedral and reniform chalcopyrite, inclusions of HgS phase and pyrrhotite–sphalerite–chalcopyrite aggregates in coarse-crystalline pyrite, zoned bornite–chalcopyrite grains, specular and globular hematite, tabular barite and quartz. The early diagenetic ovoid pyrite is enriched in most trace elements in contrast to late diagenetic varieties. Authigenic lower-temperature chalcopyrite is depleted in trace elements relative to high-temperature hydrothermal ones. Trace elements have different modes of occurrence: Se is hosted in pyrite and chalcopyrite; Tl is related to sphalerite and galena nanoinclusions; Au is associated with galena; As in pyrite is lattice-bound, whereas in chalcopyrite it is related to tetrahedrite–tennantite nanoinclusions; Cd in pyrite is hosted in sphalerite inclusions; Cd in chalcopyrite forms its own mineral; Co and Ni are hosted in chalcopyrite.

Marcasite

Authigenic

Bornite

Chalcocite

Anhydrite

10.3390/min8080321

Cite

Citations (18)

Lithological-mineralogical zonality of sulfide cyclothems in the Yaman-Kasy and Saf’yanov massive sulfide deposits (Urals)

Doklady Earth Sciences (2008)

N. P. Safina В. В. Масленников

Cyclothems

10.1134/s1028334x08030173

Cite

Citations (5)

Mineralogical Features of Ore Diagenites in the Urals Massive Sulfide Deposits, Russia

Minerals (2019)

В. В. Масленников N. R. Ayupova N. P. Safina A. S. Tseluyko Irina Yu. Melekestseva

In weakly metamorphosed massive sulfide deposits of the Urals (Dergamysh, Yubileynoe, Yaman-Kasy, Molodezhnoe, Valentorskoe, Aleksandrinskoe, Saf’yanovskoe), banded sulfides (ore diagenites) are recognized as the products of seafloor supergene alteration (halmyrolysis) of fine-clastic sulfide sediments and further diagenesis leading to the formation of authigenic mineralization. The ore diagenites are subdivided into pyrrhotite-, chalcopyrite-, bornite-, sphalerite-, barite- and hematite-rich types. The relative contents of sphalerite-, bornite- and barite-rich facies increases in the progression from ultramafic (=Atlantic) to bimodal mafic (=Uralian) and bimodal felsic (=Baymak and Rudny Altay) types of massive sulfide deposits. The ore diagenites have lost primary features within the ore clasts and dominantly exhibit replacement and neo-formed nodular microtextures. The evolution of the mineralogy is dependent on the original primary composition, sizes and proportions of the hydrothermal ore clasts mixed with lithic serpentinite and hyaloclastic volcanic fragments together with carbonaceous and calcareous fragments. Each type of ore diagenite is characterized by specific rare mineral assemblages: Cu–Co–Ni sulfides are common in pyrrhotite-rich diagenites; tellurides and selenides in chalcopyrite-rich diagenites; minerals of the germanite group and Cu–Ag and Cu–Sn sulfides in bornite-rich diagenites; abundant galena and sulfosalts in barite- and sphalerite-rich diagenites and diverse tellurides characterize hematite-rich diagenites. Native gold in variable amounts is typical of all types of diagenites.

Bornite

Covellite

Felsic

10.3390/min9030150

Cite

Citations (26)

Banded sulfide-magnetite ores of Mauk copper massive sulfide deposit, Central Urals: Composition and genesis

Geology of Ore Deposits (2015)

N. P. Safina В. В. Масленников С. П. Масленникова V. A. Kotlyarov L Danyushevsky

Sulfide Minerals

Breccia

10.1134/s1075701515030058

Cite

Citations (9)

Minerals of the Alunite Supergroup in the Bedded Massive Sulfide Ores of the Yaman-Kasy Deposit, South Urals: Morphology, Assemblages, and Chemical Composition

Geology of Ore Deposits (2024)

N. P. Safina V. A. Kotlyarov Ivan A. Blinov

Alunite

Supergroup

Morphology

10.1134/s1075701524700302

Cite

Citations (0)

Authigenesis at the Urals Massive Sulfide Deposits: Insight from Pyrite Nodules Hosted in Ore Diagenites

Minerals (2020)

N. P. Safina Irina Yu. Melekestseva N. R. Ayupova В. В. Масленников С. П. Масленникова

The pyrite nodules from ore diagenites of the Urals massive sulfide deposits associated with various background sedimentary rocks are studied using optical and electron microscopy and LA-ICP-MS analysis. The nodules are found in sulfide–black shale, sulfide–carbonate–hyaloclastite, and sulfide–serpentinite diagenites of the Saf’yanovskoe, Talgan, and Dergamysh deposits, respectively. The nodules consist of the core made up of early diagenetic fine-crystalline (grained) pyrite and the rim (±intermediate zone) composed of late diagenetic coarse-crystalline pyrite. The nodules are replaced by authigenic sphalerite, chalcopyrite, galena, and fahlores (Saf’yanovskoe), sphalerite, chalcopyrite and galena (Talgan), and pyrrhotite and chalcopyrite (Dergamysh). They exhibit specific accessory mineral assemblages with dominant galena and fahlores, various tellurides and Co–Ni sulfoarsenides in sulfide-black shale, sulfide–hyaloclastite–carbonate, and sulfide-serpentinite diagenites, respectively. The core of nodules is enriched in trace elements in contrast to the rim. The nodules from sulfide–black shale diagenites are enriched in most trace elements due to their effective sorption by associated organic-rich sediments. The nodules from sulfide–carbonate–hyaloclastite diagenites are rich in elements sourced from seawater, hyaloclastites and copper–zinc ore clasts. The nodules from sulfide–serpentinite diagenites are rich in Co and Ni, which are typical trace elements of ultramafic rocks and primary ores from the deposit.

Authigenic

Bornite

Ultramafic rock

10.3390/min10020193

Cite

Citations (11)

Mineralogy of host rocks of the Osinovskoe gold-quartz deposit (Central Urals)

МИНЕРАЛОГИЯ (MINERALOGY) (2023)

N. P. Safina Larisa Ya. Kabanova Ivan A. Blinov

The paper describes the mineralogy of mica shales of the Osinovskoe gold deposit in the Central Urals. Our studies unraveled the role of dynamometamorphism in the transformation of primary rocks and allowed the characterization of their metasomatic alteration. We showed the relationship between plastic and brittle deformations and the formation of gold-bearing mineral assemblage with major pyrite, pyrrhotite and ilmenite and subordinate and rare sphalerite, chalcopyrite, marcasite, rutile, magnetite, molybdenum, galena, altaite, hessite, melonite, petzite, calaverite, volynskite, and sylvanite. The Ag content of native gold varies from 4 to 29 wt. %. Tellurides are associated with pyrite and pyrrhotite and also form monomineral grains and intergrowths in chlorite and mica with inclusions of REE minerals (xenotime-(Y), monazite-(Ce), hydroxylbastnesite-(Ce)), allanite-(Ce)), REE-bearing minerals (epidote, apatite, zircon), Th silicate (torite), and uraninite.

Ilmenite

Allanite

Molybdenite

Marcasite

10.35597/2313-545x-2023-9-4-2

Cite

Citations (0)

Fluorite in Ores of the Saf’yanovka Massive Sulfide Deposit, Central Urals: Assemblages, Composition, and Genesis

Geology of Ore Deposits (2021)

N. P. Safina E. I. Soroka Н. Н. Анкушева Д. В. Киселева Ivan A. Blinov

Fluorite

10.1134/s1075701521020057