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The first find of grothite in gold ore deposits
Doklady Earth Sciences, 20091083 Grothite, representing an Aland Frich titanite variety that is described by the theoretical formula (Ca,REE)(Ti,Al,Fe)SiO4(O,OH,F) (1), is a relatively rare mineral, which was previously unknown in ores from noble metal deposits. Titanites with high concen trations of Al (up to 14 wt %) and F (up to 2.5 wt %) are characteristic of eclogites ...
A. S. Vakh +3 more
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Ore Deposits of Gold and Silver
Mineral Processing and Extractive Metallurgy Review, 1990Abstract As in the past, gold and, to a lesser extent, silver are attracting considerable attention from the mineral industry. Expenditure on gold exploration dominates exploration budgets worldwide. Gold is most common in the native form, but also occurs as tellurides.
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DYNAMICS OF ORE-FORMING PROCESSES IN CASE OF KAZAKHSTAN�s GOLD ORE DEPOSITS
SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings, 2023The paper considers processes of ore formation. This concerns complex dynamic natural objects, depending on polygenic geological phenomena, mutually interacting and forming a single mineral formation environment. Development of ore-forming systems is connected not only with the natural evolution of thermodynamic parameters, but also with physical ...
Z.�. Umarbekova +4 more
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U AND TH IN ROOCKS AND ORES OF PIONEER GOLD DEPOSIT
Естественные и технические науки, 2020Впервые получены данные по содержания U и Th в рудных метасоматитах, осадочных и магматических породах золоторудного месторождения Пионер. Показано что уран и торий концентрируются только в осадочных породах, в магматических породах и рудных метасоматитах происходит рассеивание радиоактивных элементов.
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The Origin of Epigenetic Gold Deposits—the Ore-Magma Theory
1987Before proceeding to the main part of this chapter it should he recalled that four general theories for the origin of vein-type gold deposits had been postulated by the midnineteenth century: the ore-magma theory involving siliceous melts, the magmatic-hydrothermal theory, secretion theories, and abyssal theories. The ultimate source of the gold, other
J. E. Spurr, Rollin Farmin, W. J. Bichan
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Ore Mineralization of the Epithermal Samolazovskoe Gold-Ore Deposit, Aldan Shield (Russia)
Key Engineering Materials, 2018The Samolazovskoe gold-ore deposit is located in the Central Aldan ore district (Russia) within the Yukhta multiphase volcano-plutonic massif, consisted of rocks of the monzonite-syenite formation (J3–K1). Four hydrothermal-metasomatic mineral parageneses are distinguished in the deposit: skarn, developed at the contact of syenites and rocks of the ...
Vasilii Ivanovich Leontev +1 more
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Recovery of Gold from Shanono Gold Ore Deposit Using α-Cyclodextrin
Mining, Metallurgy & Exploration, 2020There are two major gold recovery methods: the hydrometallurgical technique, which employs cyanide solutions, and amalgamation method, which involves mercury (Hg). These methods present considerable health, safety, and environmental concerns. Past applications of alpha-cyclodextrin (α-CD) on gold scraps show that α-CD is not only inexpensive, but is ...
A. M. Anthony +3 more
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Gold-quartz ore deposits of Yana-Kolyma belt
International Geology Review, 1967Types of ore deposits, their regional distribution, mineral associations, textures and structures are described. Ores are of Cretaceous age, posterior to batholithic granite intrusions (Jurassic). Mineralizing solutions originated in consequence of metamorphism and dehydration of sedimentary geosynclinal rock masses, and are not directly related to ...
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Endogenic ore zonation in a volcanogenic gold-silver deposit
International Geology Review, 1980(1980). Endogenic ore zonation in a volcanogenic gold-silver deposit. International Geology Review: Vol. 22, No. 7, pp. 864-868.
A. N. Nekrasova +2 more
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Nanomineralogy and nanogeochemistry of ores from gold deposits of Uzbekistan
Geology of Ore Deposits, 2010Gold deposits of Uzbekistan are localized in the Kyzylkum, Nurata, and Kurama ore districts of the Kyzylkum-Kurama metallogenic belt. They comprise a consecutive series of deposit types corresponding to the series of geochemical associations: (Au-W)—(Au-As)—(Au-Te)—(Au-Ag)—(Au-Sb)—(Au-Hg), which are arranged as a system of zones in orebodies, deposits,
R. I. Koneev +2 more
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