Results 71 to 80 of about 19,501 (234)
Journal of Microscopy, EarlyView.Abstract We compare three different methods of X‐ray analysis in a scanning electron microscope (SEM): energy‐dispersive X‐ray spectroscopy (EDX), wavelength‐dispersive X‐ray spectroscopy (WDX) and micro X‐ray fluorescence (μXRF). These methods are all applied to the same gallium arsenide (GaAs) wafer with a 0.8 nm layer of indium arsenide (InAs) on ...
Thomas Walther +4 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
A study of isotropic-pseudoanisotropic zoning in sphalerite [PDF]
Bulletin of the Geological Society of Finland, 1969 Sphalerite with isotropic-pseudoanisotropic zoning is described from greisen in Eurajoki, SW Finland. Single-crystal X-ray studies showed that the pseudoanisotropy is due to very small chalcopyrite inclusions, oriented with their crystallographic axes ...
I. Haapala, K. Laajoki
doaj +1 more source
MINERALOGICAL AND TEXTURAL EVOLUTION OF THE ECONOMIC MANGANESE MINERALIZATION IN WESTERN RHODOPE MASSIF, N GREECE [PDF]
, 1991 The western Rhodope massif contains a significant number of 'battery grade' Mn-oxide deposits which are best developed in the area near Kato Nevrokopi, Drama district, N. Greece.
Nimfopoulos, M K, Pattrick, R A D
core +1 more source
Journal of Microscopy, EarlyView.Abstract Measuring the bismuth (Bi) content of ternary gallium arsenide bismuthide (GaAsBi) alloys is important because it sensitively influences their bandgap, and Bi is known to segregate vertically to the surface and sometimes also laterally during growth, so elemental distribution maps need to be quantified.
T. Walther
wiley +1 more source
Technical guidance on normal levels of contaminants in Welsh soil : Cadmium (Cd) : January 2013 [PDF]
, 2013 Cadmium (Cd) is a metallic element naturally occurring in trace amounts at the Earth’s surface. It is toxic to humans, animals and plants, and known to be a human carcinogen.
core
Sulfur isotope rations of sulfide minerals from the deposit of the Tsuchikura mine, Shiga Prafecture, Japan [PDF]
, 1998 Sulfur isotope rations of sulfide minerals in the ore specimens from the deposit of the Tsuchikura mine are distrib-uted in a range from -0.8 to 5.4%, mostly from +0.5 to 3.0%, close to the previous data (from +1 to +3%) by Miyake and Sasaki (1980).
Harada, Kaori +2 more
core +1 more source
Influence of the Interaction between Sphalerite and Pyrite on the Copper Activation of Sphalerite [PDF]
Minerals, 2018 In this paper, the effect of pyrite on the activation of sphalerite was investigated by micro-flotation, copper adsorption experiments, X-ray photoelectron spectroscopy (XPS), and electrochemical measurement. The micro-flotation test results showed that the recovery and flotation rate of sphalerite with copper sulphate as activator and butyl xanthate ...
Bo Yang +4 more
openaire +1 more source
In situ single‐spot Rb/Sr cosmochronology of roedderite in the Ribbeck aubrite (asteroid 2024 BX1)
Meteoritics &Planetary Science, EarlyView.Abstract The mineralogy and textures of several fragments from the Ribbeck aubrite were analyzed using a combination of scanning electron microscopy, electron microprobe analysis, μRaman spectroscopy, and laser ablation inductively coupled reaction cell mass spectrometry (LA‐ICP‐MS/MS).
Christopher J. Barnes +6 more
wiley +1 more source
Particle Shape-Based Evaluation of the Leaching of Sphalerite Ore in Dilute Acid Solutions
Journal of Advanced Research in Natural and Applied SciencesIn this study, the effects of changes in particle shapes on dissolution efficiencies in zinc (Zn) recovery from a lead-zinc (Pb-Zn) ore by acid leaching method were investigated.
Tuğba Deniz Tombal +2 more
doaj +1 more source