Results 1 to 10 of about 6,491 (197)

PLACERS OF MAJOR VALLEYS IN THE LENA GOLD-PLACERS REGION

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2017
The morphology and inner structure of the placers in the maj or valleys of the Lena gold-bearing area are considered. The morphology of placers in the plan and the distribution of gold within the contours of the valleys are determined by the ...
O. V. Vinogradova
doaj   +2 more sources

Regional distribution of mercury in sediments of the main rivers of French Guiana (Amazonian basin). [PDF]

open access: yesSpringerplus, 2014
International audienceUse of mercury (Hg) for gold-mining in French Guiana (up until 2006) as well as the presence of naturally high background levels in soils, has led to locally high concentrations in soils and sediments.
Laperche V   +6 more
europepmc   +5 more sources

Method for Revealing Placer Gold Source

open access: yesГорные науки и технологии, 2019
Material characteristics of placer gold and geological and geomorphological features of placercontaining watercourses allow revealing the type of source that formed the placer.
O. V. Vladimirtseva
doaj   +3 more sources

TYPES OF GOLD PLACERS OF THE AMYL-SISTIGKHEM PLACER REGION, WEST SAYAN [PDF]

open access: yesМинералогия
Native gold from seven placers of the Amyl-Sistighem ore placer region (the Republic of Tyva, Krasnoyarsk region) is classified on the basis of its structure, morphology and chemical composition, which are studied by optical and electronic microscopy ...
Ch.M. Khertek, A.M. Sazonov
doaj   +2 more sources

Coastal-marine and legacy placers of the southern Primorye (Russia): ecology and commercial exploitation [PDF]

open access: yesE3S Web of Conferences, 2023
The article is devoted to the development of technology for reenrichment of waste from the exploitation of old gold-bearing placers that pose a significant threat to the environment.
Molchanov Vladimir, Yudakov Alexander
doaj   +1 more source

From placer deposits to technogenic mineral formations: resource and historical perspective (a study of Amur region) [PDF]

open access: yesE3S Web of Conferences, 2020
Attention to mined gold placers as sources of mineral reserve base replenishment is constantly increasing. We conducted an analysis of the field mining ratio regarding the 170-year period of gold mining history in the region, which is roughly divided ...
Mirzekhanov Gadzhi, Mirzekhanova Zoia
doaj   +1 more source

COARSE GOLD AND NUGGETS IN THE AMUR REGION

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2020
This paper investigates the aggregation forms, sizes and composition of native gold present in the ore deposits and placers of the Amur province. The province corresponds to the zone of the Late Mesozoic collision of geoblocks of the South-Eastern ...
V. A. Stepanov
doaj   +1 more source

Deformational and metasomatic transformations of detrital gold in the course of placer formation

open access: yesРуды и металлы, 2023
The richest gold placers periodically mined since 1838 are known in the north of the Republic of Tyva, within the basin of the Amyl and Sistig-Khem rivers.
Hertek Ch. M., Sazonov A. M.
doaj   +1 more source

Complex utilization of the useful components of the andreye-yulyevskoe kyanite tecnogenic deposit (Southern Urals) [PDF]

open access: yesЭкономика региона, 2013
Utilization of sillimanite group’s minerals (kyanite, sillimanite, andalusite) in high-aluminiferousrefractory industry with a purpose of following utilization in metallurgy to obtain silumine and aluminium by elctrothermic method is impossible without ...
Viktor Alekseyevich Koroteyev   +3 more
doaj   +1 more source

Modeling the formation of high metal concentration zones in man-made deposits [PDF]

open access: yes, 2018
Purpose. To study conditions of forming the zones of high metal concentration in metal-containing man-made deposits. To assess the likelihood of metal concentration in the placer core. Methods.
Korniienko, V   +4 more
core   +1 more source

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