On the centenary of the birth of professor Nina Vasil’evna Petrovskaya, Eminent researcher of gold deposits

Лаверов, Н. П.; Бортников, Н.С.; Богатиков, О. А.; Rundqvist, D. V.; Safonov, Yu. G.

doi:10.1134/s1075701510060012

Cited by 2 publications

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“…Main minerals are quartz and adularia, and ore minerals in early veins are native gold, and in later veins include native gold, pyrite, arsenopyrite, acanthite, Sb-Ag and As-Ag sulfosalts and Ag selenides. The average grades of Au and Ag in the ore bodies of the Central zone are in the range 11-33 g/t and in the late ones the range is 12-23 g/t, with Au/Ag ratios of 1:1 and 1:100, respectively [31].…”

Section: Kubaka Depositmentioning

confidence: 96%

“…The ore bodies are composed veins and stockwork-type zones. The subscripts of the veins are sublatitudinal, and the thickness is unsteady along the strike with bulges up to 20 m and constrictions up to 10 cm, averaging 1-10 m. A series of ore veins stretches for 2 km [31,36]. Main minerals are quartz and adularia, and ore minerals in early veins are native gold, and in later veins include native gold, pyrite, arsenopyrite, acanthite, Sb-Ag and As-Ag sulfosalts and Ag selenides.…”

Section: Kubaka Depositmentioning

confidence: 99%

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Typomorphism of Native Gold (Geological-Industrial Types of Gold Deposits in the North-East of Russia)

et al. 2022

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This study presents the typomorphic features of native gold grains from three different geological-industrial types (GIT) of gold deposits in the North-East of Russia: (1) gold–arsenic-sulfide in black shale strata (Natalka, Degdekan, Karalveem, Maldyak deposits), (2) gold–quartz veins in granitoids (Dorozhnoye, Butarnoye, Shkolnoye, Maltan deposits), and (3) gold–silver adularia in volcanogenic strata (Kupol, Olcha, Kubaka, Burgali, Primorskoe, Dalnee deposits). The reliability of the geological interpretation is directly related to mineral associations, fineness variations, its internal structure and the content of microimpurities. Native gold is a reliable indicator for identifying various GIT of gold deposits at the early geological-prospecting stages of studying gold-bearing areas. Typomorphic features of native gold for each of the considered GIT are stable and do not depend on the age and scale of mineralization. It is shown that using an integrated approach obtains genetic information about a particular ore object, which makes it possible to predict the vertical range of mineralization and outline the technology for processing ores. The information obtained can also be effectively used in the search for placer deposits in nearby watercourses. Identification of typomorphic features of ore and placer native gold opens up wide opportunities for delineating the distribution areas of placer deposits.

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Section: Kubaka Depositmentioning

confidence: 96%

Section: Kubaka Depositmentioning

confidence: 99%

Typomorphism of Native Gold (Geological-Industrial Types of Gold Deposits in the North-East of Russia)

et al. 2022

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“…Исследование состава руд и измененных пород проводилось методами атомно-эмиссионного спектрального количественного анализа (АО «Сосновгео») и рентгенофлуоресцентного Методика измерений массовых долей элементов: Na, Mg, Al, Si, P, S, Ca, K, Ti, Mn, Fe, Cu, Zn, As, Pb, Sb, Ni, Cr, Co, Cd, Sn, Mo, Nb, Ta, Zr, Y, Sr, Rb, U, Th, Bi, Hg, W, V, Ba, La и Ce в пробах руд золотосодержащих и продуктов их переработки рентгенофлуоресцентным методом. 3 МА ИАЦ-70-2010 (ФР.1.31.2010.07431). Методика определения массовых долей элементов в рудах и продуктах их переработки атомно-эмиссионным методом с индуктивно связанной плазмой.…”

Section: рис 1 геологическая позиция рудопроявления в региональном ма...unclassified

“…Рассматриваемое в ходе проведенного исследования рудопроявление входит в состав Мунгинского рудного узла одного из месторождений Восточного Забайкалья, которое расположено на юго-восточном фланге Балейского рудного района (рис. 1), где известны золоторудные мезотермальные месторождения Сосновское, Майское, Средне-Голготайское и Казаковское, а также крупнейшее эпитермальное месторождение региона Балейское [1][2][3][4][5].…”

Section: Introductionunclassified

Ore composition and native gold characteristics of an ore occurrence in Eastern Transbaikalia

Nikanyuk

2023

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The article deals with the characteristics of the ores of an ore occurrence of the Munginsky cluster located on the western flank of one of the commercial fields of Eastern Transbaikalia. The ores of this promising ore occurrence are underexplored, especially in the technological aspect, which served the basis for studying their composition and characterizing native gold as their main commercial component. The composition of ores and altered rocks was studied by the following methods: atomic emission spectral quantitative analysis, X-ray fluorescence, as well as phase atomic absorption and atomic emission analysis with inductively coupled plasma ICP-AES. The mass fraction of total and organic carbon was determined in the Central Fire Assay Laboratory of JSC Pokrovsky Rudnik, Blagoveshchensk. The proportion of carbonate carbon dioxide was determined by the method of titrimetric determination of carbon dioxide. The content of gold was given according to the data of assay melting, the content of silver – according to the data of atomic absorption analysis. Petrographic and mineragraphic studies were carried out using an optical microscope Olympus BX-51. The mineral composition of the ore sample was also estimated based on the results of X-ray diffraction analysis. The quantitative mineral composition was studied on the crushed material of the original ore with a particle size of -2 mm using the microscopic study data of transparent and polished thin sections on a microscope Nikon Eclipse LV 100 POL. The content of iron hydroxides was determined from the weight difference after the sample was treated with a 10 % oxalic acid solution in a water bath. Comparison of the results obtained on the ore occurrence with the materials on the ore composition of the closest deposit located in 30 km demonstrates that on the one hand they are similar and uniform, and on the other hand they feature some differences. Their common parameters include a rather high degree of sulfide content of ores and similar chemical and mineral composition with the predominance of arsenopyrite, an increased role of bismuth as well as the predominance of fine gold and its similar morphological characteristics. This fact allows to consider the ore occurrence under investigation as an integral part of a single ore system of the closest deposit.

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On the centenary of the birth of professor Nina Vasil’evna Petrovskaya, Eminent researcher of gold deposits

Cited by 2 publications

References 0 publications

Typomorphism of Native Gold (Geological-Industrial Types of Gold Deposits in the North-East of Russia)

Typomorphism of Native Gold (Geological-Industrial Types of Gold Deposits in the North-East of Russia)

Ore composition and native gold characteristics of an ore occurrence in Eastern Transbaikalia

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