Results 21 to 30 of about 6,602 (296)

Technogenic placers of the Fadeevsky node (Primorye, Russia) as sources of precious metals [PDF]

open access: yesBIO Web of Conferences
Generalization of the obtained materials leads to the conclusion that a significant amount of useful components has been accumulated in the man-made placers of Primorye (south of the Russian Far East), at the same time they pose a considerable threat to ...
Molchanov Vladimir
doaj   +1 more source

Условия формирования и перспективы обнаружения россыпных месторождений пылевидного золота в Украине [PDF]

open access: yes, 2008
Изложены тезисы новой гипотезы гравитационной дифференциации мельчайших твердых частиц в жидкой и твердой, но дезинтегрированной средах. На этой основе прогнозируется образование россыпей пылевидного золота в дельтах Дона, Днепра, Днестра и Дуная, а ...
Brune, Andreas   +5 more
core   +3 more sources

Mineralogical and Geochemical Characteristics of Placer and Ore Gold in the Upper Reaches of the Amazar River (Mogochinsky Gold Mining District, Eastern Transbaikalia)

open access: yesGeoresursy
A detailed study of gold from placers and eluvium of the ore zones of the Amazarkan deposit, located in the basin of the three upper tributaries of the Amazar River, was carried out. The placers are not very far from the primary sources.
V. V. Kolpakov   +2 more
doaj   +1 more source

Endogenous gold of the russian Altai

open access: yesРуды и металлы, 2023
The Altai of Russia in the geological and metallogenic sense includes the Altai Mountains and the northwestern part of Rudny Altai, and in administrative terms – the Altai Territory and the Altai Republic. Gorny Altai has experienced a complex history of
Gaskov I. V.
doaj   +1 more source

Evaluating the effectiveness of fine gold extraction technologies on the example of titanomagnetite beach placers of the western coast of Kamchatka

open access: yesЗаписки Горного института, 2021
The material on the gold content of coastal-marine deposits of the western coast of Kamchatka is analyzed and the resource potential is briefly characterized.
Valentina E. Kungurova
doaj   +1 more source

THE GOLD POTENTIAL OF THE NORTHERN BLACK SEA REGION

open access: yesГеологія і корисні копалини Світового океану, 2021
The article presents the results of the analysis and evaluation of gold occurrences of the Northern Black Sea and Crimea. The increased gold content of this region is associated primarily with magmatism and volcanism of the paleo-island arc and the ...
Shnyukov Ye.F.
doaj   +1 more source

Hydraulic borehole mining method possible application at Middle Larba alluvial gold field

open access: yesE3S Web of Conferences, 2018
Gold on placer deposits is mainly extracted in two ways: open and underground. But the open method of mining has a great negative impact on the environment, and the mine method is characterized by high labor intensity, capital and operating costs.
Rochev Vikror
doaj   +1 more source

Mineralogy of alluvial sediments of Avzyan gold region (the Southern Urals)

open access: yesЛитосфера, 2018
The Avzyan gold region is located within the Bashkirian anticlinorium and includes lode gold deposits and placers. The Gorny Priisk, Bogryashka and Ulyuk-Bar gold deposits are hosted in the Riphean metamorphosed carbonaceous sequence.
Ekaterina E. Palenova   +4 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Dzheltulak system of the Oktyabrsky ore-placer node of the Amur gold-bearing province

open access: yesИзвестия высших учебных заведений: Геология и разведка
Background. Information on the Dzheltulak large placer system of the Amur gold-bearing province, which has produced 80 tons of gold, is presented. Aim. To determine the geological and structural position of the Dzheltulak placer system, one of the most ...
V. A. Stepanov, A. V. Melnikov
doaj   +1 more source

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