Results 21 to 30 of about 1,143 (211)
Applied Sciences, 2022 The Gerakario Cu-Au porphyry deposit in the Kilkis ore district, northern Greece, contains epithermal quartz-stibnite veins on the eastern side of the deposit, which crosscut a two-mica gneiss. Metallic mineralization in these veins consists of stibnite +
Christos L. Stergiou +7 more
doaj +1 more source
Mechanism of action of Fe(III) on antimony release under anoxic acidic conditions
Shuiwen dizhi gongcheng dizhi, 2023 Oxidative dissolution of stibnite (Sb2S3) is the primary process that controls the release of antimony (Sb) from rock and ore into the soil and water environment and affects its transport and transformation.
Yaning TANG +4 more
doaj +1 more source
BN/BO Doping of peri-Acenoacenes: Modulating Excited States in Trapeziumene Congeners. [PDF]
Angew Chem Int Ed EnglA new family of (2,5,4)‐trapeziumenes bearing NBNBN, NBOBN, OBNBO, and OBOBO doping patterns is synthesized. Progressive N→O substitution enables precise control over the excited‐state landscape, increasing the S1 energy, decreasing the T1 energy, and widening the T2–T1 energy gap.
Poletto D +7 more
europepmc +3 more sources
Sulphur isotope geochemistry of black shale-hosted antimony mineralization, Arnsberg, northern Rhenish Massif, Germany [PDF]
, 2003 Vein-type and bedding-concordant mesothermal (180–410 °C) stibnite–sulphosalt mineralization at Arnsberg, NE Rhenish Massif, Germany, is hosted by Carboniferous pyrite-rich black shales and siliceous limestones.
Wagner, T., Boyce, A.J.
core +1 more source
High-Efficiency Semitransparent Solar Cells Based on Magnetron Sputtered Sb<sub>2</sub>S<sub>3</sub> Thin Films. [PDF]
Adv Sci (Weinh)Compact Sb2S3 films are deposited via RF magnetron sputtering using an Sb2S3 target. Post‐deposition annealing conditions are optimized to achieve a power conversion efficiency of 4.6%. Semitransparent solar cells are then fabricated with transparent top electrodes, resulting in an average visible transmittance of over 20%.
Kumar P +8 more
europepmc +2 more sources
Mineralogical and chemical characterisation on stibnite from Allchar locality, North Macedonia [PDF]
, 2022 Crystalline stibnite occurrences in the Republic of Macedonia in several antimony deposits such as Allchar, Lojane and Krstov dol. The best stibnite crystals can be found in the central parts of the Allchar mine.
Boev, Ivan +2 more
core +1 more source
ALTERATION OF SULFIDE ORES OF THE SAMOLAZOVSKOE DEPOSIT, ALDAN SHIELD, IN AN EXPERIMENTAL BIOLEACHING HEAP [PDF]
Минералогия, 2023 The paper presents the results of a mineralogical study of sulfide ores of the Samolazovskoe deposit (Aldan Shield) and the products of their experimental bacterial oxidation in a heap. Pyrite and marcasite are the major minerals of primary ores.
E.V. Belogub +3 more
doaj +1 more source
A brief overview on geothermal scaling
Bulletin of the Mineral Research and Exploration, 2023 Hot spring waters are rich in terms of minerals. Since there are dramatic changes in thermodynamic parameters in geothermal power plants, such as a decrease in temperature and pressure, severe precipitation occurs throughout the system components in an ...
Mustafa Muammer Demir +3 more
doaj +1 more source
Micro & Nano Letters, 2008 A 3D photonic crystal (PhC), synthetic opal, has been constructed by self-assembly of sub-micrometre silica spheres and designed for operation in the visible spectral range. Because of its low refractive index contrast (RIC), this PhC does not exhibit a full photonic band gap (PBG), but this property could be achieved by increasing sufficiently the RIC.
A.Z. Khokhar +4 more
openaire +1 more source
Metals, 2016 A new process for one-step extraction of antimony in low temperature from stibnite concentrate by reductive sulfur-fixation smelting in sodium molten salt, using iron oxide as sulfur-fixing agent, was presented. The influences of molten salt addition and
Yun Li +5 more
doaj +1 more source