Results 81 to 90 of about 86,925 (244)
Contrasting Surficial Composition of Native Gold from Two Different Types of Gold Ore Deposits [PDF]
Minerals, 2017 Native gold grains sampled at two different gold ore deposits in Eastern Russia have been studied by the techniques of electron spectroscopy (X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES)), electron microprobe analysis (EMPA), and scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDX).
Vladimir Tauson +4 more
openaire +1 more source
Petrologic-geochemical evidence of geologic-genetic uniformity of gold hydrothermal deposits formed in black-shale and non-shale substratum [PDF]
, 2007 The problem of gold deposits origin lying in crystal and black-shale substratum is discussed. The expediency of comparative research of all geologic-real-genetic factors of their formation, among which a significant value is retained by the geochemical ...
Kucherenko, I. V.
core
Numerical Simulation Based Targeting of the Magushan Skarn Cu-Mo Deposit, Middle-Lower Yangtze Metallogenic Belt, China [PDF]
, 2019 The Magushan Cu–Mo deposit is a skarn deposit within the Nanling–Xuancheng mining district of the Middle-Lower Yangtze River Metallogenic Belt (MLYRMB), China.
Dai, Wenqiang +8 more
core +2 more sources
Permafrost and Periglacial Processes, EarlyView.ABSTRACT The Nacho Nyäk Tagé (Stewart River) watershed in central Yukon (Canada) is characterized by discontinuous permafrost that is locally highly sensitive to thaw. This study aims to map the spatial distribution of permafrost terrain disturbances (PTDs) in the watershed and model thaw susceptibility to support community‐led land‐use planning by the
Frederic Brieger +2 more
wiley +1 more source
GOLD FORMATIONS OF THE PRIAMURSKAYA PROVINCE
Известия высших учебных заведений: Геология и разведка, 2016 It was found that within the Priamurskaya prov-nce of Late Me-ozoic age the depos-ts and occurrences of gold-quartz are wide-pread, and goldsulphide-quartz, goldsilver and goldpolymetallic formations are less popular.
V. A. Stepanov, A. V. Melnikov
doaj +1 more source
Sustainable Development, EarlyView.ABSTRACT Illegal gold mining has emerged as a major sustainability threat in the Amazon, eroding Indigenous rights, forest integrity, and climate mitigation efforts. This study examines how international market incentives relate to the expansion of illegal mining and associated deforestation within the Yanomami Indigenous Territory (YIT) from 2008 to ...
Shirléia Lago Santos +2 more
wiley +1 more source
Placer Gold Prospecting Around the Tertiary Occurrences in the Republic of Macedonia [PDF]
, 2012 Еxploration of gold as a mineral resource in Macedonia has a long history. There are more than 30 occurrences, but now gold is obtained only from the Buchim mine (Bogoevski, K., 1998).
Serafimovski, Todor +2 more
core
Acid Resistant and Highly Silver Selective Membranes Based on Charged Nanoporous 2D‐Materials
Small, EarlyView.In this work, new membranes based on charged & nanoporous nanosheets with unprecedented selectivity to silver versus a wide range of other metallic ions are reported. Furthermore, a demonstrated and lead specific intralamellar lead pathway is demonstrated. A potential applicability for ubiquitous silver in WEEE is validated.
Sarah M. Chevrier +6 more
wiley +1 more source
Localisation of gold ores in faults of different types
Известия высших учебных заведений: Геология и разведка, 2020 The results of the author’s and general works of domestic and foreign geologists, who studied the location of the largest gold deposits in fault zones, characterised by the structure of ore-bearing zones and the concentration of reserves of ores and gold
E. M. Nekrasov
doaj +1 more source
VIEW, EarlyView.We present ChitoSilkBioPatch, a maleimide‐functionalized chitosan/dACM hydrogel integrated with a stretchable nanopatterned silk mesh to provide intrinsic, antibiotic‐free antibacterial activity and bioactive wound support. The scaffold eliminates S. aureus and P.
Dorsa Dehghan‐Baniani +12 more
wiley +1 more source