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Metallogeny of endogenous gold in Tuva

I. V. Gaskov and S. G. Prudnikov
Metallogeny of endogenous gold in Tuva
Russian Geology and Geophysics (May 2022) 63 (11): 1300-1312


Analysis shows that the occurrences of ore gold of different mineragenic types and ages widespread in the Republic of Tyva are related to the intricate and long geologic history of this region. The Tyva region is of polycyclic development; in the period from the Precambrian to the Cenozoic, there were stages of subduction, accretion-collision, and rifting processes accompanied by volcanism of different types and a wide manifestation of granitoid magmatism. Gold metallogeny was discretely developed throughout the geologic history of the region and was most widely manifested at the island arc stage (570-510 Ma), in connection with the formation of gold-bearing pyrite-polymetallic deposits. The late Cambrian-Ordovician period of granitoid magmatism was also productive for gold mineralization: It was marked by the formation of porphyry Au-Cu-Mo and gold deposits and gold-skarn, gold-quartz, and gold-beresite ore occurrences. Several gold-bearing clusters confined to different structure-formational zones are distinguished in the Tuva area. By now, commercial gold contents have been established in the Tardan gold deposit with Au reserves of 7371.8 kg, in the gold-bearing Kyzyl-Tashtyg pyrite-polymetallic deposit with estimated gold reserves of 15.08 tons and silver reserves of approximately 700 tons, and in the gold-bearing Ak-Sug porphyry Cu-Mo deposit with C (sub 2) gold reserves of 83 tons and silver reserves of 368 tons. In the course of prospecting and revision performed at many gold ore clusters in recent years, additional information about the high endogenous-gold potential of the Republic of Tyva has been obtained. There are a number of objects promising for commercial reserves of endogenous gold, such as the Kara-Bel'dir gold ore cluster with C (sub 1) and C (sub 2) gold reserves of 22.8 tons, the Aldan-Maadyr gold ore cluster with predicted P (sub 2) gold resources of 38 tons and P (sub 3) gold resources of 80 tons, the Eilig-Khem ore cluster with predicted P (sub 3) gold resources of 36 tons, the Kyzyk-Chadr ore cluster with predicted P (sub 1) +P (sub 2) gold resources of 39.7 tons and silver resources of 198 tons in the Kyzyk-Chadr deposit, and the East Tannu-Ola ore district with gold resources of 68.3 tons. Thus, the intricate geologic development of the Tyva area and various geologic events, including large-scale magmatic processes, led to the formation of both gold and gold-bearing deposits and ore occurrences, which give reason to anticipate revealing of large commercial reserves of endogenous gold and the development of gold mining industry in the republic.

ISSN: 1068-7971
EISSN: 1878-030X
Serial Title: Russian Geology and Geophysics
Serial Volume: 63
Serial Issue: 11
Title: Metallogeny of endogenous gold in Tuva
Affiliation: Russian Academy of Sciences, Siberian Branch, V. S. Sobolev Institute of Geology and Mineralogy, Novosibirsk, Russian Federation
Pages: 1300-1312
Published: 20220501
Text Language: English
Publisher: Allerton Press, New York, NY, United States
References: 35
Accession Number: 2022-036792
Categories: Economic geology, geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps, sect.
N51°42'00" - N51°42'00", E95°17'60" - E95°17'60"
N53°25'60" - N53°25'60", E96°34'60" - E96°34'60"
N52°00'00" - N52°00'00", E96°00'00" - E96°00'00"
Secondary Affiliation: Tuva Institute for the Integrated Development of Natural Resources, RUS, Russian Federation
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202228
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