Results 61 to 70 of about 1,115 (180)
In situ observations of thermally induced phase transformations in iron sulfide nanoparticles
Materials Today Advances, 2020 Iron pyrite (FeS2) exhibits dynamic thermal stability and represents an ideal model system to probe complex phase transformations in materials. At elevated temperatures, the sublimation of S atoms from the FeS2 lattice results in a phase transformation ...
N.K. Moehring +5 more
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Meteoritics &Planetary Science, Volume 61, Issue 6, Page 1077-1094, June 2026.Abstract Samples returned by NASA's OSIRIS‐REx mission from the carbonaceous asteroid (101955) Bennu hold clues about conditions in the early solar system and the formation of planetary bodies. Initial investigation of Bennu samples found that they are rich in phyllosilicates and other secondary minerals formed during aqueous alteration of a larger ...
A. J. King +8 more
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Journal of Materials Research and Technology, 2019 Utilization of large doses of inorganic reagents in mineral industry not only leads to high cost but also increases the toxicity in the environment. This research provides a new, environmentally friendly, biodegradable, and cost-effective depressant ...
Sultan Ahmed Khoso +4 more
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Meteoritics &Planetary Science, Volume 61, Issue 6, Page 1026-1044, June 2026.Abstract Asteroid compositional analysis relies on comparing reflectance spectra with laboratory data from well‐characterized meteorites. To advance this comparison, we performed a comprehensive laboratory analysis on a slab of the Northwest Africa (NWA) 7317—CR6 carbonaceous chondrite.
Simone Pascucci +10 more
wiley +1 more source
Evolution of pyrrhotite oxidation in aggregates for concrete
Materiales de Construccion, 2014 Rocks containing pyrrhotite bands are sometimes used to produce concrete. These rocks oxidize and produce long-term expansive reactions that damage concrete structures, leading to important economic and risk related repercussions.
I. Oliveira, S. H.P. Cavalaro, A. Aguado
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Mineral Processing of Silver-carrying Bismuth Minerals from Yunnan
Kuangchan zonghe liyongThe gravity separation crude concentrate produced by a certain mine contains 17.9 g/t of silver, 1.15% of bismuth, and 23.42% of sulfur. 73.29% of the silver is present in bismuth minerals, with the main bismuth mineral being natural bismuth and a small ...
Hongbing CHEN, Jianjian ZOU, Zhen HU
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On the Separation of Pyrrhotite and Sphalerite
FLOTATION, 1969 The depression of pyrrhotite containing sphalerite is very difficult on account of the copper ion activation during the zinc flotation process. Accordingly, the mineral particles to be floated by the copper ion activation are so many that the flotation machine overloads.
MUKAI, Shigeru, NAKAHIRO, Yoshitaka
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CHEMICAL COMPOSITION AND TRACE ELEMENT PATTERN OF A PYRRHOTITE-PYRITE NODULE FROM THE DERGAMYCH CO-BEARING MASSIVE SULFIDE DEPOSIT, SOUTH URALS [PDF]
Минералогия, 2018 Distribution of trace elements of pyrrhotite-pyrite nodule from sulfide-serpentinite «gravelites» of the Dergamysh Co-bearing massive sulfide deposit is studied using LA ICP MS method. The nodule is zonal with a central porous core composed of pyrrhotite
I.Yu. Melekestseva +3 more
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International Journal of Electrochemical Science, 2018 The corrosion characteristics of carbon steel with pearlite-ferrite microstructure in water-saturated supercritical H2S/CO2 environment are analyzed. The whole corrosion process is divided into three stages, the grain shape and morphology of corrosion ...
Chi Yu, Hongwei Wang, Xiuhua Gao
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Adsorption of As and Zn on mechanically synthesized FeS [PDF]
Acta Montanistica Slovaca, 2005 The wastewater containing heavy metals posses one of the main problem for the environment. The research of the heavy metals removal is oriented on the application of natural materials as well as the waste from industry and agriculture. This work presents
Alena Aláčová +3 more
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