Assemblages of Microinclusions of Fe–Ti Oxides, Apatite, Sulfates, and Sulfides in Pyroxenites, Gabbroids, and Adakitic Granitoids from the Gabbrovy Massif as Precursors of Iron Oxide–Copper–Gold and Iron Oxide–Apatite Mineralization in the Stanovoy Superterrane (Russian Far East)
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| Title: | Assemblages of Microinclusions of Fe–Ti Oxides, Apatite, Sulfates, and Sulfides in Pyroxenites, Gabbroids, and Adakitic Granitoids from the Gabbrovy Massif as Precursors of Iron Oxide–Copper–Gold and Iron Oxide–Apatite Mineralization in the Stanovoy Superterrane (Russian Far East) |
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| Authors: | Kepezhinskas, P. K.1 (AUTHOR) pavel_k7@yahoo.com, Berdnikov, N. V.1 (AUTHOR), Krutikova, V. O.1 (AUTHOR), Kozhemiako, N. V.1 (AUTHOR) |
| Source: | Russian Journal of Pacific Geology. Dec2024, Vol. 18 Issue 6, p621-636. 16p. |
| Subject Terms: | *Earth sciences, *Sphene, *Copper, *Geochemistry, *Oceanic crust, *Apatite |
| Abstract: | Mesozoic basic–ultrabasic massifs and spatially associated adakites in the central part of the Stanovoy superterrane reflect the long (more than 100 Ma) history of development of the active continental margin associated with subduction of the oceanic crust of the Mongol–Okhotsk Basin, continental collision, and the widespread development of postcollisional tectonomagmatic processes along the southern edge of the Siberian Craton. A striking example of such plutonic complexes is the Gabbrovy massif, consisting of pyroxenites, amphibole–biotite gabbro, and gabbro–anorthosites with mixed subduction–postcollisional geochemical characteristics, intruded by postcollisional adakitic granitoids formed through melting of a thickened mafic subcontinental crust. Intrusive rocks of the Gabbrovy massif contain microinclusions of iron–titanium oxides (magnetite, titanomagnetite, ilmenite), apatite, sulfates (barite, celestite), and sulfides (pyrite, chalcopyrite, sphalerite, Pb, Cu, Fe sulfides) in association with Zn–Cu–Ag alloys, titanite (including cerium-bearing), and thorite. Associations of these microminerals were previously identified by us as the ITOASS (iron–titanium oxide–apatite–sulfate–sulfide) assemblage, characteristic of the early magmatic stages of the formation of iron oxide–copper–gold (Andean type) and apatite–magnetite (Kiruna type) deposits. The presence of ITOASS microinclusions in basic–ultrabasic massifs and adakites of the central part of the Stanovoy superterrane indicates the possibility of detecting ore occurrences of the Andean and Kiruna types in the eastern part of the Stanovoy superterrane. [ABSTRACT FROM AUTHOR] |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 181497073 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Assemblages of Microinclusions of Fe–Ti Oxides, Apatite, Sulfates, and Sulfides in Pyroxenites, Gabbroids, and Adakitic Granitoids from the Gabbrovy Massif as Precursors of Iron Oxide–Copper–Gold and Iron Oxide–Apatite Mineralization in the Stanovoy Superterrane (Russian Far East) – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kepezhinskas%2C+P%2E+K%2E%22">Kepezhinskas, P. K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pavel_k7@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Berdnikov%2C+N%2E+V%2E%22">Berdnikov, N. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Krutikova%2C+V%2E+O%2E%22">Krutikova, V. O.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kozhemiako%2C+N%2E+V%2E%22">Kozhemiako, N. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Russian+Journal+of+Pacific+Geology%22">Russian Journal of Pacific Geology</searchLink>. Dec2024, Vol. 18 Issue 6, p621-636. 16p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink><br />*<searchLink fieldCode="DE" term="%22Sphene%22">Sphene</searchLink><br />*<searchLink fieldCode="DE" term="%22Copper%22">Copper</searchLink><br />*<searchLink fieldCode="DE" term="%22Geochemistry%22">Geochemistry</searchLink><br />*<searchLink fieldCode="DE" term="%22Oceanic+crust%22">Oceanic crust</searchLink><br />*<searchLink fieldCode="DE" term="%22Apatite%22">Apatite</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Mesozoic basic–ultrabasic massifs and spatially associated adakites in the central part of the Stanovoy superterrane reflect the long (more than 100 Ma) history of development of the active continental margin associated with subduction of the oceanic crust of the Mongol–Okhotsk Basin, continental collision, and the widespread development of postcollisional tectonomagmatic processes along the southern edge of the Siberian Craton. A striking example of such plutonic complexes is the Gabbrovy massif, consisting of pyroxenites, amphibole–biotite gabbro, and gabbro–anorthosites with mixed subduction–postcollisional geochemical characteristics, intruded by postcollisional adakitic granitoids formed through melting of a thickened mafic subcontinental crust. Intrusive rocks of the Gabbrovy massif contain microinclusions of iron–titanium oxides (magnetite, titanomagnetite, ilmenite), apatite, sulfates (barite, celestite), and sulfides (pyrite, chalcopyrite, sphalerite, Pb, Cu, Fe sulfides) in association with Zn–Cu–Ag alloys, titanite (including cerium-bearing), and thorite. Associations of these microminerals were previously identified by us as the ITOASS (iron–titanium oxide–apatite–sulfate–sulfide) assemblage, characteristic of the early magmatic stages of the formation of iron oxide–copper–gold (Andean type) and apatite–magnetite (Kiruna type) deposits. The presence of ITOASS microinclusions in basic–ultrabasic massifs and adakites of the central part of the Stanovoy superterrane indicates the possibility of detecting ore occurrences of the Andean and Kiruna types in the eastern part of the Stanovoy superterrane. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1134/S1819714024700362 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 621 Subjects: – SubjectFull: Earth sciences Type: general – SubjectFull: Sphene Type: general – SubjectFull: Copper Type: general – SubjectFull: Geochemistry Type: general – SubjectFull: Oceanic crust Type: general – SubjectFull: Apatite Type: general Titles: – TitleFull: Assemblages of Microinclusions of Fe–Ti Oxides, Apatite, Sulfates, and Sulfides in Pyroxenites, Gabbroids, and Adakitic Granitoids from the Gabbrovy Massif as Precursors of Iron Oxide–Copper–Gold and Iron Oxide–Apatite Mineralization in the Stanovoy Superterrane (Russian Far East) Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kepezhinskas, P. K. – PersonEntity: Name: NameFull: Berdnikov, N. V. – PersonEntity: Name: NameFull: Krutikova, V. O. – PersonEntity: Name: NameFull: Kozhemiako, N. V. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 18197140 Numbering: – Type: volume Value: 18 – Type: issue Value: 6 Titles: – TitleFull: Russian Journal of Pacific Geology Type: main |
| ResultId | 1 |
