Metallogenic Province of Northeastern Transbaikalia: A Summary

Gongalsky, Bronislav; Krivolutskaya, Nadezhda

doi:10.1007/978-3-030-03559-4_12

Cited by 2 publications

(16 citation statements)

References 17 publications

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“…The increase in the proportion of residual melts rising upward as crystallization resulted in an increase in the thickness of the predominantly mesocratic layers upward along the section and the increase in the power of the rhythms. Further consistent decrease in the proportion melanocratic then mesocratic rocks resulted in the upper section to the formation leucogabbro, anorthosite, and substantially titanomagnetite-plagioclase rocks -"chineite" [3]. Such rocks make up the upper part of the Upper Bushveld Zone [17 ].…”

Section: Discussionmentioning

confidence: 99%

“…Udokan, Pravoingamakitskoe, Sakukan, Klukvennoe, Unkur, Krasnoe, Burpala and other deposits and ore prospects [3]. The main features of the Udokan Supergroup of terrigenous rocks are as follows: (1) great thickness, up to 12-15 km; (2) breaks in sedimentation; (3) pyrrhotite and pyrite mineralization throughout the Udokan Supergroup from lower to upper formations; (4) discrete localization of chalcocite-bornite sulphide ore from the Chitkanda to the Sakukan levels; (5) compositional diversity of sulfide and oxide minerals in ore (Fe, Cu, S, Ag, Au, U, REE, etc.…”

Section: Iron-silver (Gold) Copper Deposits In Terrigenous Rocksmentioning

confidence: 99%

“…Deposits of Fe-Ti-V oxide (Magnitnoe, Etyrko) and Cu-PGE (Rudnoe, Verkhnechineyskoe, Skvoznoe, Kontactovoe sulfide ores of Chineisky massive [3]. Allocation of different groups of rocks of the Chiney massif -1) "altered anorthosites", gabbro, monzodiorites, pyroxenites; 2) high-titanium gabbroids; 3) low-titanium gabbroids; 4) magmatic, fluid-magmatic breccias with lamprophyre and gabbronorite cement is an important link in the study of the development of ore-magmatic systems and the sequence of crystallization of host rocks and the telescoping of magmatic oxide and sulphide ores.…”

Section: Irongold -(Pgm)copper Deposits In Igneous Rocksmentioning

confidence: 99%

“…The following types of ore are recognized in the best studied Chineysky pluton: (1) early and late magmatic Fe-Ti-V oxide ore associated with high-Ti gabbro rocks; (2) syngenetic titanomagnetite disseminations in low-Ti gabbro rocks; (3) magmatic stockwork sulfide zones in high-Ti gabbro rocks; (4) post-magmatic hydrothermal ore related to fluid-magmatic breccia and quartz veins of the Pravoingamakitskydeposit [3,4], and (5) pyrhotite-chalcopyrite lodes distal from the pluton. The age of gabbroids of the Chiney Complex was determined by various methods as 1811-1880 Ma [3] and the age of the postorogenic granites of the Kodar Complex, as 1876-1873 Ma [11]. The late Paleoproterozoic Concordia age of 1896.2 ± 6.2 Ma for disseminated and veinlet titanites effectively dates formation of the Udokan Cu-Ag deposit [12].…”

Section: Irongold -(Pgm)copper Deposits In Igneous Rocksmentioning

confidence: 99%

“…The ore deposits and prospects formed at different depths are now exposed at the surface and thus are accessible for comprehensive study. In addition to magmatic Fe-Ti-V oxide mineralization in the Chiney and Luktur layered mafic and ultramafic plutons, the primarily postmagmatic copper and noble-metal sulfide deposits are localized in the endo-and exocontact zones of these plutons (Rudnoe, Upper Chiney, Skvoznoe, Kontaktovoe, Magnitnoe, Etyrko deposits and prospects) [2,3,4]. The giant Udokan sandstone-hosted copper deposit is distant from intrusive bodies and bears attributes of hydrothermal sulfide mineralization.…”

Section: Introductionmentioning

confidence: 99%

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Deposits of the Udokan-Chineysky ore-magmatic system of Eastern Siberia

Gongalsky

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The aggregate of ore deposits localized in the Udokan-Chineysky ore district is unique and is the result of multi–stage, polygenetic formation. The deposits of copper and other metals formed at various depths occur within a limited area. The oxide and sulfide ore are spatially associated in the sedimentary rocks pertaining to the Paleoproterozoic Udokan Supergroup and the intrusive mafic–ultramafic rocks of the Chineysky Complex. The granite rocks of the Kodar Complex and gabbro rocks of the Chineysky Complex also date back to Paleoproterozoic. The same age has been established for metasomatic Nb–Ta–Zr–REE–Y and U mineralization in the albitized terrigenous rocks of the Udokan Supergroup (Katugin deposit and Chitkanda prospect) and U–Pd prospects hosted in terrigenous rocks. The U–REE mineralization superposed on the titanomagnetite deposits in the Chineysky pluton has not analogues in the world’s practice. The occurrences of uranium mineralization have been noted in form of pitchblende and U–Th rims around chalcopyrite grains at the Unkur copper deposit hosted in sedimentary rocks. The enrichment in U and Pb has been documented in crosscutting quartz veinlets with bornite mineralization at the Udokan deposit.

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Section: Discussionmentioning

confidence: 99%

Section: Iron-silver (Gold) Copper Deposits In Terrigenous Rocksmentioning

confidence: 99%

Section: Irongold -(Pgm)copper Deposits In Igneous Rocksmentioning

confidence: 99%

Section: Irongold -(Pgm)copper Deposits In Igneous Rocksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Deposits of the Udokan-Chineysky ore-magmatic system of Eastern Siberia

Gongalsky

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Mineral and S-Isotope Compositions of Cu-Sulfide Deposits in Southern Siberia (Kodar–Udokan Region), Russia

Gongalsky,

Velivetskaya,

Taskaev

2024

Minerals

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The Kodaro–Udokan region is a huge Cu metallogenic province in Southern Siberia, one of the largest on Earth. It contains world-class copper sandstone-hosted Udokan (Cu reserves of 26.7 Mt) and PGE-Ni-Cu Chineysky deposits related to gabbro–anorthosite pluton (Cu—10 Mt; Fe-Ti-V, 30 Gt of ore). Furthermore, there are many small deposits of sulfide ores in sedimentary and igneous rocks in this region as well. For many decades, their genesis has been hotly debated. We studied the mineral composition and the sulfur isotopes in several deposits located at different levels of the stratigraphic sequence and in gabbro intruded in sandstones of the Udokan complex. The differences in ore compositions were found. The Burpala and Skvoznoy deposits consisting of the chalcocite–bornite association are characterized only by negative δ34S. The δ34S values for the Udokan deposits are mostly <0 (up to −28‰). The positive δ34S data characterize the ores of the Chineysky and Luktursky intrusions. Two Cu sandstone-hosted deposits are characterized by complex ore composition, i.e., the Krasny deposit, comprising chalcopyrite–pyrrhotite ores, is enriched in Co, Ni, Bi, Sb, Mo, Pb, Zn, Se, Te, and U and has a wide range of δ34S = −8.1–+13.5‰, and the Pravoingamakitsky deposit (Basaltovy section), consisting of quartz–chalcopyrite veins, has high PGE contents in ores with δ34S = +2.9–+4.0‰. These deposits are located near the gabbro massifs, and it is supposed that their ore compositions were influenced by magmatic fluids. The general regularities of the localization of the deposits in rift zones, and the proximity of mineral and isotopic composition allow us to conclude that the main source of copper could be rocks of basic composition because only they contain high Cu contents. Fluids from deep zones could penetrate to the surface and form Cu sandstone-hosted deposits.

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Metallogenic Province of Northeastern Transbaikalia: A Summary

Cited by 2 publications

References 17 publications

Deposits of the Udokan-Chineysky ore-magmatic system of Eastern Siberia

Deposits of the Udokan-Chineysky ore-magmatic system of Eastern Siberia

Mineral and S-Isotope Compositions of Cu-Sulfide Deposits in Southern Siberia (Kodar–Udokan Region), Russia

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