ЭПИТЕРМАЛЬНЫЕ Au-Ag-Se-Te МЕСТОРОЖДЕНИЯ ЧУКОТКИ (АРКТИЧЕСКАЯ ЗОНА РОССИИ): МЕТАЛЛОГЕНИЯ, МИНЕРАЛЬНЫЕ ПАРАГЕНЕЗИСЫ, ФЛЮИДНЫЙ РЕЖИМ

Бортников, Н. С.; Волков, А. В.; Савва, Н. Е.; Прокофьев, В.Ю.; Колова, Е. Е.; Доломанова-Тополь, А.А.; Галямов, А. Л.; Мурашов, К. Ю.

doi:10.15372/gig2021169

Cited by 7 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…8, е), также, вероятно, являющееся смесью гессита (Ag 2 Te) и алтаита (PbTe). Гессит относится к типичным минералам малосульфидных эпитермальных кварцевых жил [54], а присутствие теллуридов благородных металлов служит характерным признаком вулканогенно-гидротермального рудообразования [4,9].…”

Section: рис 6 медистое и медисто-цинкистое серебро в ильдеусском мас...unclassified

“…Вторая стадия формирования серебряной минерализации в глубинных магматогенных системах островных дуг связана с их метасоматическими и гидротермальными преобразованиями в условиях верхней коры, часто вовлеченной в коллизионные и пост-коллизионные (связанные с локальным растяжением) процессы [3,4,9]. В случае постколли-зионной рифтогенной тектоники солидифицированные магматогенные системы выводятся по системе листрических разломов в верхние горизонты коры, локализуясь в грабенообразных структурах орогенных поясов [9], и попадают в область влияния (разгрузки) минерализованных мезотермальных и эпитермальных растворов [73].…”

Section: двухстадийная модель формирования серебрянной минерализации ...unclassified

See 1 more Smart Citation

Silver Mineralization in Deep Magmatogenic Systems of Ancient Island Arcs: Ildeus Ultrabasic Massif, Stanovoy Mobile Belt (Russian Far East)

Kepezhinskas¹,

Бердников²,

Krutikova³

et al. 2023

View full text Add to dashboard Cite

The Triassic (232–233 Ma) Ildeus mafic-ultrabasic massif is a fragment of a large mineralized magmatogenic system formed within the Stanovoy mobile belt at the Mesozoic stage of its evolution. Ultrabasic rocks are represented by cumulative plagioclase- and amphibole-bearing dunites, peridotites, websterites, and pyroxenites; basic rocks are gabbro-anorthosites, norites, and two-pyroxene gabbro. Most intrusive rocks of the Ildeus magmatogenic system experienced ultramafic (serpentine, chlorite, talc, carbonates) and acidic (quartz, biotite, potassium feldspar, secondary micas) metasomatism. Geochemical characteristics (calc-alkaline differentiation trend, negative anomalies of highly charged incoherent elements) indicate the subduction nature of the primary magma in the Ildeus system. The ultrabasic rocks are intruded by intermediate-acid intrusions with geochemical characteristics of adakite. Magmatic-stage silver mineralization is represented by microinclusions of cuprous silver, alloys of silver, copper, gold and zinc, acanthite and silver halides in association with pentlandite, chalcopyrite, bornite, and pyrrhotite. These rocks are characterized by microinclusions of native platinum, gold, tungsten, bismuth, lead, PGE alloys, W-Co-Ti, Sb-Pb, Cu-Zn-Sn, minerals of Ag-Cu-Sb-Se-S and Zn-Ni systems -Co-Fe-S, barite, chlorapatite and Bi-Sn-Pb chlorides. At the metasomatic stage, native silver, Au-Ag alloys, silver and copper chlorides, acanthite, silver and lead tellurides coexist with digenite, heathlewoodite, pyrite, sphalerite, galena, native nickel and gold, Cu-Zn alloys, sulfides of the Pb-As- Cu-Fe-S and bismuth chloride. At the magmatic stage, silver minerals crystallized under reducing conditions in the presence of high-temperature aqueous fluids enriched in sulfide sulfur, halogens, and volatile siderophile (W, Pt) and chalcophile (Ag, Bi, Sn, Sb, Pb) metals that entered the primary melt from serpentinites, metamorphosed gabbroids, and metal-bearing pelagic sediments of the subducting oceanic plate. Metasomatic parageneses of silver minerals were formed under oxidized near-surface conditions with the participation of low-temperature water-salt solutions with elevated concentrations of sulfate sulfur, arsenic, and tellurium. A two-stage model is proposed for the formation of silver mineralization in island arc magmatic systems, in which the high-temperature magmatic stage of formation in deep crustal parts is replaced by low-temperature hydrothermal ore formation processes in near-surface conditions.

show abstract

Section: рис 6 медистое и медисто-цинкистое серебро в ильдеусском мас...unclassified

Section: двухстадийная модель формирования серебрянной минерализации ...unclassified

Silver Mineralization in Deep Magmatogenic Systems of Ancient Island Arcs: Ildeus Ultrabasic Massif, Stanovoy Mobile Belt (Russian Far East)

Kepezhinskas¹,

Бердников²,

Krutikova³

et al. 2023

View full text Add to dashboard Cite

show abstract

Evolution of Aptian and Albian magmatism of Western and Northern Chukotka (Northeast Russia) based on zircon U-Pb geochronology and rock geochemistry

Тихомиров

Luchitskaya

Prokofiev

et al. 2023

International Geology Review

View full text Add to dashboard Cite

The Epithermal Ag‒Au Mineralization of the Televeem Volcanic Dome Uplift, Central Chukotka

Volkov,

Savva,

Pilitsyn

et al. 2024

J. Volcanolog. Seismol.

View full text Add to dashboard Cite

ЭПИТЕРМАЛЬНЫЕ Au-Ag-Se-Te МЕСТОРОЖДЕНИЯ ЧУКОТКИ (АРКТИЧЕСКАЯ ЗОНА РОССИИ): МЕТАЛЛОГЕНИЯ, МИНЕРАЛЬНЫЕ ПАРАГЕНЕЗИСЫ, ФЛЮИДНЫЙ РЕЖИМ

Cited by 7 publications

References 0 publications

Silver Mineralization in Deep Magmatogenic Systems of Ancient Island Arcs: Ildeus Ultrabasic Massif, Stanovoy Mobile Belt (Russian Far East)

Silver Mineralization in Deep Magmatogenic Systems of Ancient Island Arcs: Ildeus Ultrabasic Massif, Stanovoy Mobile Belt (Russian Far East)

Evolution of Aptian and Albian magmatism of Western and Northern Chukotka (Northeast Russia) based on zircon U-Pb geochronology and rock geochemistry

The Epithermal Ag‒Au Mineralization of the Televeem Volcanic Dome Uplift, Central Chukotka

Contact Info

Product

Resources

About