Results 1 to 10 of about 6,519 (193)

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

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

Geological and structural position of the Svetlinsky gold deposit (Southern Urals)

open access: yesЗаписки Горного института, 2022
The paper presents the geological and structural position of the large Svetlinsky gold deposit in the Kochkar anticline (Southern Urals), localized in the zone of the Late Paleozoic (D3) deep thrust of the western dip.
Alexander Yu. Kissin   +2 more
doaj   +1 more source

Matter-mineral characteristics of technogene placers – potential sources of precious metals (on the example of the Nizhneselemdzhinsky gold-bearing node of Priamurye, Russia)

open access: yesGeoresursy, 2019
Over tens of years of mining and processing of ores and placers of gold in the world a huge amount of wastes originated in the form of spoil heaps and tailing dumps, in which the content of valuable components allow them to be considered a real ...
I.V. Kuznetsova   +2 more
doaj   +1 more source

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