Typomorphic features of the quartz of various mineral paragenesis from the gold mineralization in Karakshatau Mountains (West Uzbekistan)

Yıl 2019, , 117 - 127, 15.08.2019

Svetlana Koloskova Jakhongir Movlanov

https://doi.org/10.19111/bulletinofmre.432046

Öz

As a result of complex studies -
geological-structural, morphostructural analytical, mineralogical mapping of
quartz formations, detailed geochemical work and analysis of geochemical fields
– forecasting prospecting features of gold ore taxon’s: ore zone; ore field;
deposit and ore body. They are characterized by groups of criteria: morphostructural,
stratigraphic-lithological, structural-tectonic, magmatic, geophysical,
metasomatic, mineralogical, geochemical factors and attributes, and a
geological-genetic model of the gold-bearing ore-forming system in the collapse
zone. Favorable geological and structural conditions for the localization of
gold mineralization in the mountains of Karakchatau are associated with the
areas of long-term tectonic-magmatic activation in metalliferous sediments of
Є-О contrast lithological composition. The coincidence of manifestations of
gold mineralization to the blocks formed by transverse faults at the sites
where they intersected the Karakchatau crush zone was noted. To the
channel-localizing parts inside are blocky and unextended interblock tectonic
structures with positions in favorable “structural traps” in their azimuthal
curvatures of executed productive types of hydrothermal, sulfidizing quartz.
The results of mineralogical mapping of quartz formations along the Karakchatau
crush zone (Western Uzbekistan) are considered. Five genetic types of quartz
are distinguished. The most productive of them is hydrothermal quartz of types
3 and 4 associated with pyrite,arsenopyrite and gold, which forms vein fields
in areas of kinks and expansion of the zone of crushing. Identification of any
goods and services that can be used for commercial purposes, including in the
geological structure, other regions of Western Uzbekistan.

 

 

Anahtar Kelimeler

Gold, Mineralogical mapping, Typomorphism, Quartz, Karakchatau, Uzbekistan, Genetic type

Teşekkür

This study was conducted within the framework of the state budget topic “Analysis of geological and structural conditions for the location of gold ore occurrences of the Karakchatau Mountains and an assessment of their prospects”. We express our gratitude to the Vladimir Tsoy for critical discussion of the article. We would like to thank Cahit Dönmez for his support for us to contribute an article to this journal. We also would like Prof. Dr. Emin Çiftçi and an anonymous reviewers for their insightful comments on the paper, as these comments led us to an improvement of the work.

Kaynakça

• Babaev, K.L. 1951. Genetic characteristics of quartz formations of the Nuratau range. Tr. Institute of Geology 6, Tashkent, ANUSSR,
• Babaev, K.L. 1985. Genetic types of quartz // Zap.Uzb.otd. WMO. Issue. 38. Tashkent: Fan, 5-10.
• Ivankin, P.F., Nazarova N.I. 2001. Deep fluidization of the earth’s crust and its role in petro-labor, salt and oil formation. Moscow, TsNIGRI, 206 p.
• Koloskova, S.M. 2007. Geological and genetic model of the development of the gold-bearing ore-forming system in the Southnuratau zone of collapse. Geology and Mineral Resources 2, 44-49.
• Koloskova, S.M. 2008. Ore-forming processes in the gold- bearing zones of the crushing of the cover-fold regions of Western Uzbekistan: the genesis and typomorphism of quartz formations // Problems of geology of ore deposits, mineralogy, petrology and geochemistry. Conference proceedings. - Moscow: IGEM RAS, 2008. p. 92-94
• Mikhailova, Yu.V., Mansurov, M.M. 2004. Polyformativity of gold ore deposits of the Kyzylkum-Nuratau region in connection with its geodynamic development. Problems of geology of the Phanerozoic Tien Shan. Conference proceedings. Issue 2, Tashkent, 95-102.
• Petrovskaya, N.V. 1956. Some features of intrathoric metamorphism of gold-quartz formations on the example of deposits of the Yenisei Ridge. Tr. Institute “Nigrisoloto” 21, Moscow, 3-44.
• Yurgenson, G.A. 1984. Typomorphism and ore-bearing property of veined quartz. Moscow, Nedra, 149 p.
• Yanovsky, V.M. 1990. Ore-controlling structures of terrigenous miogeosyncline. Moscow, Nedra,–246 p.