Results 171 to 180 of about 87,639 (320)

The evolution of the Earth's surface iron cycle. [PDF]

Proc Natl Acad Sci U S A
Scholz F, Doetterl S, Hardisty DS.
europepmc   +1 more source

Fully Compensated Ferrimagnetic Properties of (Cr,Fe)S Compound with a Pyrrhotite‐Type Structure

Small, Volume 22, Issue 51, 11 September 2026.
Pyrrhotite‐type crystal structure of (Cr,Fe)S compound. The fabrication conditions for obtaining a single phase of the non‐equilibrium phase were optimized. The temperature dependence of the magnetization exhibits the typical behavior of compensated ferrimagnetism. A large magnetic coercivity of the (Cr,Fe)S compound.
Weida Yin, Masato Miyakawa, Satoshi Semboshi, Noriharu Yodoshi, Akira Masago, Yosuke Kawahito, Tetsuya Fukushima, Hisazumi Akai, Rie Y. Umetsu   +8 more
wiley   +1 more source

Fe(III)-(II) Mineral Transformation and Associated Organic Matter Stabilization Processes in a Tidal Marsh Soil. [PDF]

Environ Sci Technol
Jagode J, Carstens JF, Kashi H, Holthusen D, Tran K, Fleige H, Carus J, Fuchs E, Renz F, Spielvogel S, Guggenberger G.   +10 more
europepmc   +1 more source

Coal Mine Wastewater as a Secondary Resource: Advances in Treatment and Value Recovery Technologies

Environmental Quality Management, Volume 36, Issue 3, September 2026.
ABSTRACT Coal mine wastewater, which has historically been considered an environmental problem, is becoming more widely recognized as a secondary resource with substantial value recovery potential. Nevertheless, recent progress demonstrates that this wastewater could be converted into highly useful, industrially available pigments (like iron oxides) by
Mokgadi G. Rapeta, Johannes P. Maree, Tumelo M. Mogashane, Titus A. M. Msagati   +3 more
wiley   +1 more source

Pyrite-assisted mechanochemical leaching of chalcopyrite concentrate in sulfuric acid under non-oxidative conditions. [PDF]

Sci Rep
Tahami M, Shojaei V, Schaffie M, Ranjbar M.   +3 more
europepmc   +1 more source

Probing the Elastic Anisotropy of Schistose Rocks West of the Tauern Window (Eastern Alps, Austria): The Largest Homogeneous Volume

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The anatomy of orogens is difficult to decipher as structural information is usually limited to surface and seismic data. Seismic properties are directionally dependent on anisotropic minerals, especially phyllosilicates. Due to tectonic complexity, the effect of anisotropy in seismic data is difficult to determine.
D. Lang, R. Kuehn, R. Kilian, H. Pomella, M. Stipp   +4 more
wiley   +1 more source

The Effect of Pyrite Content in Aggregates on Concrete Deformation and Failure Prediction. [PDF]

Materials (Basel)
Zhang K, Li W, Wang S, Wang C, Huang X, Zhu M, Wang Z, Deng M.   +7 more
europepmc   +1 more source

Intra‐Tessera Plains: Implications of Their Radar Properties for Surface Processes on Venus

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Intra‐tessera plains are radar‐dark plains deposits that occur within tesserae. Their emplacement mechanism(s) and composition are poorly constrained, though they are hypothesized to be basaltic lava flows. Here, we map intra‐tessera plains within 16 different tesserae spanning various latitudes and elevations.
E. N. Haas, J. L. Whitten
wiley   +1 more source

Selective flotation of chalcopyrite over pyrite in a low-grade copper sulfide ore using selective collectors and non-cyanide depressants. [PDF]

Sci Rep
Soltani F, Darabi H, Khodabandehlou F, Parvaneh A, Salehi H.   +4 more
europepmc   +1 more source

Botanical constraints on pyrite formation

, 2007
Pyrite is precipitated within the cells of higher plants and algae at ambient temperatures by diffusion of aqueous Fe(II) followed by reaction with microbial or inorganic S(− II). The absence of any additional oxidizing agent in sufficient concentrations
Rickard, David Terence, Oldroyd, Anthony, Grimes, Stephen T., Butler, Ian, Davies, Kevin L.   +4 more
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