Results 71 to 80 of about 19,486 (279)
Lead, zinc and copper mineralisation in basal Carboniferous sediments at Westwater, south Scotland [PDF]
, 1977 A zioneo f lead, zinc and copperm ineralisatioins developedo ver a minimum I of 4 km of strikeo f basal Carboniferoucse mentstoneg roup sedimentsa nd immediatelyu nderlyingB irrenswarkL avas atwestwater,n ear Laqholm in south Scotland.
Davies, A. +5 more
core
Mineralogical characterization of Sn deposits from the Santa Fe District, Bolivia [PDF]
, 2015 The Sn-Zn-Pb-Ag Japo-Santa Fe-Morococala ore deposit is located in the Central Andean Belt province. The ore mineralization is hosted in a Paleozoic metasedimentary sequence and porphyritic Oligocene-Miocene igneous rocks. Ore minerals occur in veins and
Alfonso Abella, María Pura +4 more
core
Utilization of flotation in copper extraction from polymetallic ore [PDF]
, 2020 The aim of this study was to examineflotation of utility metals from poor polymetallic ores and verify the potential for profitable yields in connection withpotentially economic deposits of non-ferrous metals.The paper describes results in ...
Janáková, Iva +2 more
core +1 more source
Results in Physics, 2019 The research investigates whether the copper activation of sphalerite can result in the adsorption of xanthate on the S-site of sphalerite surface at the atomic level.
Yong Zeng +4 more
doaj
Mineralogy, geochemistry and fluid inclusion studies of Dagh-Dali Zn-Pb(±Au) Deposit, Northern Takab, Northwest Iran [PDF]
پترولوژی, 2018 Dagh-Dali Zn-Pb deposit is located 40 km north of Takab city and it consist of Bekhair-Bolaghi and Baldirghani ore zones. Mineralization in Bekhair-Bolaghi is consist of galena, sphalerite, pyrite and chalcopyrite with disseminated texture hosted in the ...
Yousef Rahimsouri +2 more
doaj +1 more source
Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]
, 2014 Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum +5 more
core +3 more sources
2D Nonlayered Materials for Transistor Application
Advanced Physics Research, EarlyView.2D nonlayered materials possess a vast material library and have comprehensive applications in transistors. However, at this stage, they hold great potential, but this potential has seen limited exploration compared to 2D layered materials. This review provides statistics on the nonlayered material library, CVD synthesis and characterization, advances ...
Yongqi Dai +3 more
wiley +1 more source
Kinetics of Sphalerite Leaching by MnO2-KI Oxidation System in Sulfuric Acid
MetalsEfficient extraction of zinc from polymetallic concentrates is crucial for the metallurgical industry. Traditional leaching techniques often rely on strong oxidizing agents, which can be wasteful and environmentally harmful.
Mladen Bugarčić +6 more
doaj +1 more source
Laser Liftoff of GaAs Thin Films [PDF]
arXiv, 2014 The high cost of single crystal III-V substrates limits the use of GaAs and related sphalerite III-V materials in many applications, especially photovoltaics. Separating epitaxially-grown layers from a growth substrate can reduce costs, however the current approach, which uses an acid to laterally etch an epitaxial sacrificial layer, is slow and can ...
arxiv
Archaeological Prospection, EarlyView.ABSTRACT This paper presents the interdisciplinary investigation (archaeology, geochemistry, history) of a medieval silver and lead production site located in southern France, in the Minier valley (Occitanie, Aveyron, Le‐Viala‐du‐Tarn). In order to identify the production sites, in situ geochemical surveys were carried out using a portable X‐ray ...
Céline Tomczyk +3 more
wiley +1 more source