Comparative metallogenic description of the pyritic and copper porphyry associations

Tvalchrelidze, G. A.

doi:10.1080/00206817709471068

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Observations made in the Gadabay mining district are in agreement with its description as a porphyry-epithermal district. The alteration model, proposed by Baba-zade et al (1990), suggests that the Kharadagh, Kharkhar and Djaygir deposits represent the upper part of the porphyry system (see alteration model by Sillitoe, 2010),which is more or less consistent with the uplift of the Shamkir estimated at ~2km by Tvalchrelidze (2009). Volcanoclastic rocks, dated from the Bajocian to Bathonian (Baba-zade et al, 1990) are intruded by two main intrusive events.…”

Section: Formation Conditionmentioning

confidence: 90%

Mineralogical features and formation conditions of the Zafar copper-gold deposit (Lesser Caucasus, Azerbaijan)

Baba-zadeh,

Mansurov,

Valiyev

et al. 2024

Journ. Geol., Geogr., and Geoec..

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The Zafar copper-gold deposit is located in Gadabay ore district, 3.5 km northwest of the Gadabay gold mine and 2 km southwest of the Ugur mine. This newly discovered cop- per-gold deposit contains 6.8 million tonnes of measured resource (0.5% Cu, 0.4 ppm Au and 0.6 % Zn, according to Zafar JORC Mineral Resource Estimate Update Report 2022). SEM analyses were carried out via «JSM-6610LV Scanning Electron Microscope» manufactured by JEOL USA. Petrographic studies were carried out using a ZEISS microscope with ZEN 2.3 imaging software. In this stage of the research we defined mineralogical properties of rocks and gold bearing mineralization type. According to the SEM analysis, gold mineralization formed in the pyrite, chalcopyrite (their derivatives too) stages. Based on the mineralogical study, the main ore minerals consist of pyrite, chalcopyrite, enargite, sphalerite, arsenopyrite, galena, baryte, pyrrhotite and sternbergite (silver mineral) based on polished section results. The main gangue minerals are quartz, baryte and carbonate. Quartz crystals in bands are euhedral to anhedral, vary in size from microcrystalline to coarse grained. The Zafar deposit was formed by two events. The first event is the formation of the «massive pyrite» related to small Later Bajocian sub-volcanic rhyolite-dacite bodies. The second event is assumed to be «copper-pyrite» and «copper-zinc» mineralization and is reported to be formed by the post-magmatic activity of the Gadabay diorite intrusive. This study has demonstrated new ideas about the formation and genesis of the Zafar deposit. The K-rich calc-alkaline composition of various rocks indicates that subduction-related magmatism occurring along Lok-Karabakh belt had a crucial role in forming this deposit. The information given in the article is of practical importance for regional predictive metallogenic constructions, prospecting and evaluation of epithermal Au–Cu deposits.

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Section: Formation Conditionmentioning

confidence: 90%

Mineralogical features and formation conditions of the Zafar copper-gold deposit (Lesser Caucasus, Azerbaijan)

Baba-zadeh,

Mansurov,

Valiyev

et al. 2024

Journ. Geol., Geogr., and Geoec..

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“…Most of the porphyry copper deposits have been associated either with orogenic (USA, Canada, Chile, and the eastern branch of the Pacific Ocean Belt) or with late-geosynclinal (Caucasus, Mediterranean Belt, and some items in South America) magmatic associations ( Tvalchrelidze, 1975). The occurrences we considered are mainly the result of an early geosynclinal magmatism (or more precisely, magmatism of the concluding phase of the early geosynclinal stage).…”

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confidence: 99%

Copper deposits of the veinlet-segregation type in the Urals

Vorob'yev

1979

International Geology Review

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Supplementary Bibliography of Strata-Bound and Stratiform Ore Deposits, 1974–1978

Wolf¹

1981

Bibliography and Ore Occurrence Data

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Comparative metallogenic description of the pyritic and copper porphyry associations

Cited by 3 publications

References 7 publications

Mineralogical features and formation conditions of the Zafar copper-gold deposit (Lesser Caucasus, Azerbaijan)

Mineralogical features and formation conditions of the Zafar copper-gold deposit (Lesser Caucasus, Azerbaijan)

Copper deposits of the veinlet-segregation type in the Urals

Supplementary Bibliography of Strata-Bound and Stratiform Ore Deposits, 1974–1978

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