Results 31 to 40 of about 2,099 (197)
COST ASSESSMENT OF GOLD ORE DEPOSITS ADJUSTED FOR CAPITAL INVESTMENTS
Записки Горного института, 2018 The paper focuses on the problems of geologic and economic assessment of mineral deposits. Existing methods have certain advantages and disadvantages, but always rely on unified assessment criteria that fail to take into account specific parameters of ...
A. Yu. Zaitsev
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Estimation of efficiency of development of copper and gold deposits of Krasnoyarsk North [PDF]
Арктика и Север, 2017 The article presents the probable approach to the assessment of the availability of the mineral deposits. This approach is specially created for initial estimation of resourses and reserves of low degree of exploration.
Viktor I. Bragin +2 more
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地质科技通报, 2021 Chelugoubei Gold Deposit in Yumen City, Gansu Province is located at the intersection of the western North Qilian Orogenic Belts and eastern Altyn Tagh Sinistral strike-slip fault shearing zones, which is a famous "golden triangle" in Northwest China ...
Yanliang Liu, Ya Gao, Jindong Wei
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Deep Underground Science and Engineering, EarlyView.Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
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Deep Underground Science and Engineering, EarlyView.This research proposes an interpretable hybrid stacking ensemble framework, optimized by the Sparrow Search Algorithm, to enhance hard rock pillar stability prediction. By integrating six machine learning models—k‐nearest neighbors, support vector machines, random forests, Gradient Boosting Decision Tree, eXtreme Gradient Boosting, and Light Gradient ...
Ning Wang +3 more
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Известия высших учебных заведений: Геология и разведка, 2015 Dzhagdy-Selemdzinskaya metallogemc zone is shown to be the one of the most productive gold-bearing zones in Priamurskaya province. The placer and ore deposits mined in the area are estimated to be about 350 t of gold, including 293,811 of placer and 57 ...
V. A. Stepanov, A. V. Melnikov
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ON «STEP OF ALLOCATION» AND FORECASTING OF THE VEIN GOLD ORE BODIES
Известия высших учебных заведений: Геология и разведка, 2018 On the example of a number of domestic and foreign gold vein deposits it has been shown that the system of gold-ore bodies is located along some narrow local ore controlling displacements in a shape of veins.
E. M. Nekrasov
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.As a metalloid with broad prospects in advanced applications, Te has not been fully clarified in terms of its intricate electrochemical behaviors across varied systems. This review systematically integrates fundamental electrochemical mechanisms, reaction kinetics identifications, and device application insights, establishing a comprehensive framework ...
Meng Zhang +6 more
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Geological Journal, EarlyView.Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia +4 more
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Руды и металлыThe data are presented on the geological and isotopic age of gold deposits of the Solovyovsky gold ore center in the Amur province, assigned to the gold-polymetallic, gold-sulfide-quartz, and gold-quartz formation types.
Stepanov V. A., Melnikov A. V.
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