Shkol’noe gold deposit, the Russian Northeast

Волков, А. В.; Savva, N. E.; Sidorov, A. A.; Prokof’ev, V. Yu.; Goryachev, N. A.; Voznesensky, S. D.; Alshevsky, A. V.; Chernova, A. D.

doi:10.1134/s1075701511010065

Cited by 19 publications

(9 citation statements)

References 4 publications

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Section: Sea Of Okhotsksupporting

confidence: 88%

“…Similar results were obtained earlier from studying the Shkolnoe gold deposits, located in the same region [2,4]. The gold mineralization of the Shkolnoe deposit [4] shows many similarities with that of the Butarnoe deposit. It is also represented by quartz veins, located mainly within the stock of Late Jurassic granitoids and resulted from fluids similar in chemical composition under similar PT conditions.…”

Section: Sea Of Okhotsksupporting

confidence: 88%

“…This is confirmed by differences in the mineralogy and geochemistry of ores (table, [4]) and the chemical composition of fluids of the deposits under consideration (Fig. 4).…”

Section: Sea Of Okhotskmentioning

confidence: 55%

“…It is also represented by quartz veins, located mainly within the stock of Late Jurassic granitoids and resulted from fluids similar in chemical composition under similar PT conditions. A distinctive feature of the Shkolnoe deposit is pockets of bonanza grade gold mineralization resulting from Late Cretaceous tec tonic magmatic activity (TMA) [4]. In comparison to the composition of the ore forming fluid of the Butar noe deposit, that of the Shkolnoe deposit is character ized by a lower concentration of carbon dioxide and higher concentrations of all the major salt components and many microcomponents (Fig.…”

Section: Sea Of Okhotskmentioning

confidence: 99%

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Geochemical peculiarities of ore-forming fluids and conditions of formation of gold mineralization of the Butarnoe deposit (Northeast of Russia)

et al. 2011

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Section: Sea Of Okhotsksupporting

confidence: 88%

Section: Sea Of Okhotsksupporting

confidence: 88%

“…This is confirmed by differences in the mineralogy and geochemistry of ores (table, [4]) and the chemical composition of fluids of the deposits under consideration (Fig. 4).…”

Section: Sea Of Okhotskmentioning

confidence: 55%

Section: Sea Of Okhotskmentioning

confidence: 99%

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Geochemical peculiarities of ore-forming fluids and conditions of formation of gold mineralization of the Butarnoe deposit (Northeast of Russia)

et al. 2011

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“…; Volkov et al . ). Clathrate melting temperature values ( T m‐CLATH ) for this group are between +0.4 and +5.8°C (Fig.…”

Section: Fluid Inclusion Geothermometrymentioning

confidence: 99%

Fluid inclusion and stable isotope constraints on the genesis of the Jian copper deposit, Sanandaj–Sirjan metamorphic zone, Iran

2012

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The Jian copper deposit, located on the eastern edge of the Sanandaj–Sirjan metamorphic zone, southwest of Iran, is contained within the Surian Permo‐Triassic volcano‐sedimentary complex. Retrograde metamorphism resulted in three stages of mineralization (quartz ± sulfide veins) during exhumation of the Surian metamorphic complex (Middle Jurassic time; 159–167 Ma), and after the peak of the metamorphism (Middle to Late Triassic time; approximately 187 Ma). The early stage of mineralization (stage 1) is related to a homogeneous H2O–CO2 (XCO2 > 0.1) fluid characterized by moderate salinity (<10 wt.% NaCl equivalent) at high temperature and pressure (>370°C, >3 kbar). Early quartz was followed by small amounts of disseminated fine‐grained pyrite and chalcopyrite. Most of the main‐ore‐stage (stage 2) minerals, including chalcopyrite, pyrite and minor sphalerite, pyrrhotite, and galena, precipitated from an aqueous‐carbonic fluid (8–18 wt.% NaCl equivalent) at temperatures ranging between 241 and 388°C during fluid unmixing process (CO2 effervescence). Fluid unmixing in the primary carbonaceous fluid at pressures of 1.5–3 kbar produced a high XCO2 (>0.05) and a low XCO2 (<0.01) aqueous fluid in ore‐bearing quartz veins. Oxygen and hydrogen isotope compositions suggest mineralization by fluids derived from metamorphic dehydration (δ18Ofluid = +7.6 to +10.7‰ and δD = −33.1 to −38.5‰) during stage 2. The late stage (stage 3) is related to a distinct low salinity (1.5–8 wt.% NaCl equivalent) and temperatures of (120–230°C) aqueous fluid at pressures below 1.5 kbar and the deposition of post‐ore barren quartz veins. These fluids probably derived from meteoric waters, which circulated through the metamorphic pile at sufficiently high temperatures and acquire the characteristics of metamorphic fluids (δ18Ofluid = +4.7 to +5.1‰ and δD = −52.3 to −53.9‰) during waning stages of the postearly Cimmerian orogeny in Surian complex. The sulfide‐bearing quartz veins are interpreted as a small‐scale example of redistribution of mineral deposits by metamorphic fluids. This study suggests that mineralization at the Jian deposit is metamorphogenic in style, probably related to a deep‐seated mesothermal system.

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Fluid inclusion and stable isotope geochemistry of the orogenic–type Zinvinjian Cu–Pb–Zn–Au deposit in the Sanandaj–Sirjan metamorphic belt, Northwest Iran

Asadi

Niroomand

Moore

2018

Journal of Geochemical Exploration

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Shkol’noe gold deposit, the Russian Northeast

Cited by 19 publications

References 4 publications

Geochemical peculiarities of ore-forming fluids and conditions of formation of gold mineralization of the Butarnoe deposit (Northeast of Russia)

Geochemical peculiarities of ore-forming fluids and conditions of formation of gold mineralization of the Butarnoe deposit (Northeast of Russia)

Fluid inclusion and stable isotope constraints on the genesis of the Jian copper deposit, Sanandaj–Sirjan metamorphic zone, Iran

Fluid inclusion and stable isotope geochemistry of the orogenic–type Zinvinjian Cu–Pb–Zn–Au deposit in the Sanandaj–Sirjan metamorphic belt, Northwest Iran

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