Results 21 to 30 of about 748 (152)
Greigite: a true intermediate on the polysulfide pathway to pyrite
Geochemical Transactions, 2007 The formation of pyrite (FeS2) from iron monosulfide precursors in anoxic sediments has been suggested to proceed via mackinawite (FeS) and greigite (Fe3S4).
Benning Liane G, Hunger Stefan
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Geochemistry, Geophysics, Geosystems, 2020 Gyro‐remanent magnetization (GRM) is a frequently occurring yet unwanted remanence contamination for certain samples during alternating field (AF) demagnetization of the natural remanent magnetization.
Zongqi Duan +4 more
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A large gyromagnetic effect in greigite [PDF]
Geophysical Journal International, 2001 SUMMARY Rotational and anhysteretic remanent magnetization (RRM and ARM) acquisition curves of two sediment samples containing greigite have been measured up to peak fields of 80 mT at rotation frequencies between 5 and 95 revolutions per second (rps).
Stephenson A, Snowball IF
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Magnetic Mineral Diagenesis in a Newly Discovered Active Cold Seep Site in the Bay of Bengal
Frontiers in Earth Science, 2020 Diagenetically formed magnetic minerals at marine methane seep sites are potential archive of past fluid flow and could provide important constraints on the evolution of past methane seepage dynamics and gas hydrate formation over geologic time.
F. Badesab, P. Dewangan, V. Gaikwad
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Synthesis of greigite (Fe3S4) particles via a hydrothermal method
AIP Advances, 2019 Greigite (Fe3S4) particles, with strong ferrimagnetic behavior, have been found to have desirable uses in the areas of biomedical and environmental applications.
Jonathan Moore +3 more
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Microwave-assisted Synthesis of Greigite Fe3S4 nanosheets wrapped in an rGO Matrix as anode material for Sodium-ion batteries [PDF]
MATEC Web of Conferences, 2022 Greigite (Fe3S4), which have ferromagnetic in inverse thiospinel (AB2S4), is widely researched to use an adsorbent and biomedical field because non-toxicity and abundant in nature.
Choi Ikhwan +3 more
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ENIGMATIC X-RAY MAGNETIC CIRCULAR DICHROISM IN GREIGITE (Fe3S4) [PDF]
The Canadian Mineralogist, 2012 Greigite (Fe 3S 4), a widely occurring iron thiospinel, was investigated using soft X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD). XAS and XMCD spectra were recorded at the Fe L2,3 edges for pure synthetic and natural greigite samples.
Chang, Liao +4 more
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Clogging of water supply wells in alluvial aquifers by mineral incrustations, central Serbia [PDF]
Geološki Anali Balkanskoga Poluostrva, 2015 The formation of incrustations on public water supply well screens reduces their performance considerably. The incrustations increase hydraulic losses, reduce the capacity of the well and screen, affect the quality of the pumped water and ...
Majkić-Dursun Brankica +2 more
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Magnetotactic Bacteria as Potential Sources of Bioproducts
Marine Drugs, 2015 Magnetotactic bacteria (MTB) produce intracellular organelles called magnetosomes which are magnetic nanoparticles composed of magnetite (Fe3O4) or greigite (Fe3S4) enveloped by a lipid bilayer.
Ana Carolina V. Araujo +4 more
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Magnetic spectroscopy of nanoparticulate greigite, Fe3S4 [PDF]
Mineralogical Magazine, 2017 AbstractSynthesis of Ni and Zn substituted nano-greigite, Fe3S4, is achieved from single source diethyldithiocarbamato precursor compounds, producing particles typically 50–100 nm in diameter with plate-like pseudohexagonal morphologies. Up to 12 wt.% Ni is incorporated into the greigite structure, and there is evidence that Zn is also incorporated but
Pattrick, Richard +8 more
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