Results 11 to 20 of about 4,396,031 (348)
GEOCHEMICAL AND MAGNETIC CHARACTERISTICS OF PLACER GOLD DEPOSITS FROM CENTRAL KALIMANTAN, INDONESIA
Rudarsko-geološko-naftni Zbornik, 2023 Massive tailings have resulted from the extensive use of placer deposits in Central Kalimantan, Indonesia, by artisanal and small-scale gold mining (ASGM) activities. Recently, the placer deposits and their tailings have been exploited for heavy minerals.
Gusfrimanuel Nahan +3 more
doaj +1 more source
Evidence for Bronze Age and Medieval tin placer mining in the Erzgebirge mountains, Saxony (Germany)
Geoarchaeology, 2019 Tin is an essential raw material both for the copper–tin alloys developed during the Early Bronze Age and for the casting of tableware in the Medieval period.
J. Tolksdorf +9 more
semanticscholar +1 more source
Study on the Current Situation and Utilization of Titanium Ore Resources in Yunnan [PDF]
E3S Web of Conferences, 2023 In view of the development and utilization of the titanium industry in Yunnan Province, the paper expounds the current situation and utilization of titanium resources in Yunnan Province, introduces the main mineralization and main element analysis ...
Huang Shihong +3 more
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Status of development orientations for mining titanium placers in Vietnam
Горные науки и технологии, 2016 Vietnam has potential reserves of titanium placers, located mainly along the coast of the Middle spreading across provinces from Thanh Hoa to Ba Ria – Vung Tau.
Xuan Nam Bui , Si Giao Ho
doaj +1 more source
Frontiers in Water, 2020 Water quality impacts from artisanal and small-scale alluvial (placer) gold mining operations occur in developing economies across several continents including Asia, Africa, and South America.
William P. Johnson +5 more
doaj +1 more source
Modeling the formation of high metal concentration zones in man-made deposits [PDF]
, 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
Historical mercury losses from the gold mines of Victoria, Australia
Elementa: Science of the Anthropocene, 2020 Health and ecological risks associated with the use of mercury in gold mining are well known, with much recent attention focussed on contemporary small-scale artisanal mining. Legacy tailings from historical gold mining may also present ongoing risks, as
Susan Lawrence, Peter Davies
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Dredging technology at placer gold deposits in the Far North
Journal of Degraded and Mining Lands Management, 2023 The volumes of world gold mining were reviewed. As a result of the analysis, it was found that the proportion of placer gold is very insignificant. This is due to the fact that the most easily accessible reserves are substantially depleted, and the ...
Ravil Z Nafikov +3 more
doaj +1 more source
Ground penetrating radar investigations of the geological structure of loose sediments at solid mineral deposits [PDF]
E3S Web of Conferences, 2020 For effective commercial development of deposits, an increase in the information content of operational exploration is required. In recent years, the range of methods used to obtain complete and reliable information about the structure and properties of ...
Fedorova Larisa +4 more
doaj +1 more source
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2022 The information through social media shows that there is quite an intense placer mining activity by local residents in the Bantimurung area, Tondong Tallasa District, Pangkep Regency.
Ulva Ria Irfan +2 more
doaj +1 more source