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Intrusion-related gold-bismuth deposits of North-East Russia: PTX parameters and sources of hydrothermal fluids

Published on Nov 1, 2018in Ore Geology Reviews3.39
· DOI :10.1016/j.oregeorev.2018.09.004
Olga V. Vikent'eva2
Estimated H-index: 2
(RAS: Russian Academy of Sciences),
V.Y. Prokofiev1
Estimated H-index: 1
(RAS: Russian Academy of Sciences)
+ 2 AuthorsNikolay S. Bortnikov6
Estimated H-index: 6
(RAS: Russian Academy of Sciences)
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Abstract
Abstract Intrusion-related Au-Bi deposits of North-East Russia are related to Late Mesozoic orogenic S- and I-type granites of ilmenite series. The studied deposits differ in their position relatively to the plutons, alteration, ore body morphology and sulphide content in ores. Based on mineral composition of ores, studied deposits are divided into bismuth-sulphotelluride-quartz, bismuth-arsenide-sulpharsenide and bismuth-siderite-polysulphide types. Bismuth-sulphotelluride-quartz deposits (Levo-Dybinskoe, Kurum, Ergelyakh, Tuguchak, Basugunya) are characterised by low-sulphide (≤3 vol%) mineralisation. Native gold associates with bismuth minerals (bismuthinite, sulphotellurides and tellurides, maldonite, jonassonite, native bismuth). Bismuth-arsenide-sulpharsenide deposits (Myakit, Chepak, Dubach, Chistoe, Kandidatskoe) host As-rich mineralisation. Lollingite and arsenopyrite are main minerals, and their contents vary from 5 to 60 vol% (commonly ∼10%). The intergrowths of native gold with bismuth minerals (sulphotellurides, tellurides, native bismuth) occur mainly in arsenopyrite. Bismuth-siderite-polysulphide (Arkachan) type is characterised by high-sulphide (5–15 vol%) and high-carbonate (up to 35 vol%) ores. Native gold associates with bismuthinite and other sulphobismuthites. Minerals of tellurium are rare. Fluid inclusion and stable isotope study of samples from eighteen Au-Bi deposits constrains the fluid composition, formation temperatures, pressures, and fluid sources. Four types of fluid inclusions (FI) were revealed: (I) two-phase FI, consisting of H 2 O liquid and CO 2 vapour, and three-phase FI with H 2 O liquid, CO 2 vapour and CO 2 liquid; (II) vapour-rich CO 2 one- or two-phase FI with minor (rarely dominant) CH 4 and N 2 , sometimes with a thin liquid rim; (III) two-phase liquid-vapour aqueous inclusions; (IV) three- or multiphase FI, consisting of H 2 O liquid, gas bubble and one or more daughter minerals. Au-Bi mineralisation formed at 437–200 °C (mainly from 400 to 250 °C) and 0.1–1.9 kbar from a H 2 O-CO 2 -NaCl fluid, which forms an immiscible brine and CO 2 -bearing vapour at low pressure (≤1.3 kbar) as well as low- to moderate salinity CO 2 -H 2 O mixtures without brines at higher pressure (≥1.3 kbar). The studied deposits formed at shallow (Ergelyakh, Tuguchak, Arbatskoe at 1–2 km, Kurum, Levo-Dybinskoe at 2–3 km) and deep (Chuguluk, Shkolnoe, Arkachan at ∼4 km, Dubach at >5 km) depth. Bismuth-sulphotelluride-quartz deposits commonly occur at shallow depth, whereas bismuth-arsenide-sulpharsenide and bismuth-siderite-polysulphide deposits are mainly formed in deeper environment. The stable isotope data suggest predominantly magmatic source of gold-bearing fluids, but magmatic fluid was enriched in light O, C and S isotopes as a result of fluid immiscibility. The magmatic source is consistent with the overlap in lead isotope compositions of ores and related intrusions, as well as synchronism of magmatism and hydrothermal activity according to geochronology data.
  • References (54)
  • Citations (1)
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References54
Newest
Published on Dec 1, 2017in Ore Geology Reviews3.39
Olga V. Vikent'eva2
Estimated H-index: 2
(RAS: Russian Academy of Sciences),
Nikolay S. Bortnikov6
Estimated H-index: 6
(RAS: Russian Academy of Sciences)
+ 3 AuthorsValeriy V. Murzin1
Estimated H-index: 1
(RAS: Russian Academy of Sciences)
Abstract The Berezovsk gold deposit in the Middle Urals has been mined for 270 years. Its endowment (past production and gold reserves) is estimated to be 490 t of gold. The deposit is located in the greenschist metamorphosed Silurian volcanogenic-sedimentary rocks intruded by granitoid dykes to the north-east of Late Carboniferous Shartash granite massif. Mineralisation is represented by sulphide-quartz veins in the granitoid dykes (“ladder” veins) and in the host rocks (“krassyk” veins) formed...
Published on Nov 1, 2017in Geology of Ore Deposits0.59
I. V. Vikentyev2
Estimated H-index: 2
(RAS: Russian Academy of Sciences),
R. Kh. Mansurov1
Estimated H-index: 1
+ 9 AuthorsE. O. Groznova4
Estimated H-index: 4
(RAS: Russian Academy of Sciences)
Geological and structural conditions of localization, hydrothermal metasomatic alteration, and mineralization of the Petropavlovskoe gold deposit (Novogodnenskoe ore field) situated in the northern part of the Lesser Ural volcanic–plutonic belt, which is a constituent of the Middle Paleozoic island-arc system of the Polar Urals, are discussed. The porphyritic diorite bodies pertaining to the late phase of the intrusive Sob Complex play an ore-controlling role. The large-volume orebodies are rela...
Published on May 1, 2016in Economic Geology3.29
Stephen F. Cox35
Estimated H-index: 35
(ANU: Australian National University)
Many types of hydrothermal ore deposits form at overpressured conditions during high fluid flux through fault zones in the continental seismogenic regime. These include many orogenic gold deposits, some types of Fe oxide Cu-Au systems, and a variety of intrusion-related deposits, including some high-sulfidation epithermal systems. The internal structures of these deposits indicate formation while faults were active, in a regime involving episodic slip. Partial to complete sealing of fault zones ...
Published on Jan 1, 2016in Ore Geology Reviews3.39
Eva Chicharro5
Estimated H-index: 5
(Complutense University of Madrid),
Marie-Christine Boiron31
Estimated H-index: 31
(University of Lorraine)
+ 2 AuthorsCarlos González Fernández-Vallejo29
Estimated H-index: 29
(Complutense University of Madrid)
The Logrosan Sn–(W) ore deposits in the metallogenic Sn–W province of the European Variscan Belt consist of endo- and exogranitic greisen-type and quartz–cassiterite veins associated with a S-type granite. Mineral characterization, fluid inclusion study, isotope geochemistry and Ar–Ar geochronology have been combined in order to reconstruct the conditions for Sn–(W) mineralization. The endo- and exogranitic mineralization must have been developed in a relatively long-lived system (~ 308–303 Ma),...
Published on Jun 1, 2014in Ore Geology Reviews3.39
N. A. Goryachev4
Estimated H-index: 4
(RAS: Russian Academy of Sciences),
Franco Pirajno48
Estimated H-index: 48
(UWA: University of Western Australia)
Abstract The Russian Far East or Far East Russia (FER) is host to a huge gold endowment and has produced more than 6500 t of gold, since the 1860s. Much of this gold has come from several mining districts: Aldan, Upper Amur, Lower Amur, Okhotsk, Allakh-Yun, Yana-Kolyma, Priokhotie, Omolon, and Chukotka. These districts include several gold deposits, mostly of orogenic and epithermal nature, as well as large and very large alluvial placer deposits. The main gold districts are of Late Mesozoic age...
Published on Apr 1, 2014in Geochemical Perspectives5.75
Bruce W. D. Yardley42
Estimated H-index: 42
(University of Leeds),
Robert J. Bodnar51
Estimated H-index: 51
(VT: Virginia Tech)
Fluids play a critical role in the geochemical and geodynamical evolution of the crust, and fluid flow is the dominant process associated with mass and energy transport in the crust. In this Perspectives , we summarise the occurrence, properties and role that fluids play in crustal processes, as
Published on Jan 1, 2014in Gondwana Research6.48
Richard J. Goldfarb39
Estimated H-index: 39
,
Ryan D. Taylor7
Estimated H-index: 7
(USGS: United States Geological Survey)
+ 2 AuthorsOmero Felipe Orlandini3
Estimated H-index: 3
(CU: University of Colorado Boulder)
Abstract The Asian continent formed during the past 800 m.y. during late Neoproterozoic through Jurassic closure of the Tethyan ocean basins, followed by late Mesozoic circum-Pacific and Cenozoic Himalayan orogenies. The oldest gold deposits in Asia reflect accretionary events along the margins of the Siberia, Kazakhstan, North China, Tarim–Karakum, South China, and Indochina Precambrian blocks while they were isolated within the Paleotethys and surrounding Panthalassa Oceans. Orogenic gold depo...
Published on Dec 1, 2011in Geochimica et Cosmochimica Acta4.26
Nicholas J. Pester9
Estimated H-index: 9
(UMN: University of Minnesota),
M. E. Rough3
Estimated H-index: 3
(UMN: University of Minnesota)
+ 1 AuthorsWilliam E. Seyfried15
Estimated H-index: 15
(UMN: University of Minnesota)
Abstract Field and experimental investigations demonstrate the chemistry of mid-ocean ridge hydrothermal vent fluids reflects fluid–mineral reaction at higher temperatures than those typically measured at the seafloor. To account for this and, in turn, be able to better constrain sub-seafloor hydrothermal processes, we have developed an empirical geothermometer based on the dissolved Fe/Mn ratio in high-temperature fluids. Using data from basalt alteration experiments, the relationship; T (°C) =...
Published on Jun 1, 2009in Doklady Earth Sciences0.64
Vyacheslav V. Akinin10
Estimated H-index: 10
(RAS: Russian Academy of Sciences),
Andrei V. Prokopiev14
Estimated H-index: 14
(RAS: Russian Academy of Sciences)
+ 6 AuthorsV. A. Trunilina1
Estimated H-index: 1
(RAS: Russian Academy of Sciences)
U-Pb SHRIMP-dating of zircons from twenty five intrusions representative of the Main granitoid batholith belt and associated dike swarms (Yano-Kolyma gold bearing province, North East of Asia) are mostly ∼150 ± 3 Ma (Kimmeridgian-Tithonian). Two less widespread impulses of magmatism dated at 160–155 Ma and 146–143 Ma representing the full range of ages present in the Main belt. Paleoproterozoic (∼1.8 Ga) inherited zircons were found in three intrusions from the south-western part of the belt whe...
Published on Jun 1, 2009in Ore Geology Reviews3.39
Alexander Yakubchuk6
Estimated H-index: 6
(RAS: Russian Academy of Sciences)
Abstract The orogenic collages of the northern Circum-Pacific between Japan and Alaska revealed an endowment of about 450 Moz Au in various deposit types and diverse Mesozoic–Cenozoic tectonic settings. The area consists of predominantly late Paleozoic to Cenozoic turbidite to island arc terranes as well as Precambrian cratonic terranes that can be grouped into the Kolyma–Alaska, Kamchatka–Aleutian, and Nipponide collages. The latter can be linked via the Mongol–Okhotsk suture with the late Pale...
Cited By1
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Published on May 15, 2019in Minerals2.25
Albert I. Zaitsev , Valery Yu. Fridovsky1
Estimated H-index: 1
,
Maxim V. Kudrin1
Estimated H-index: 1
This paper describes features of petrographic and chemical compositions and isotopic dating of the Ergelyakh and Sokh plutons, located within the Kular-Nera slate belt, Verkhoyansk-Kolyma folded region (VKFR), Northeast Russia. Intrusion of the massifs took place approximately 145–150 million years ago. Different isotopic systems on the whole rock samples and mineral separates record at least two stages of later tectono-magmatic activity 130–120 and 110–100 million years ago. Granitoid magmas fo...
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