Results 1 to 10 of about 3,477 (195)

Timescale of a magmatic-hydrothermal system revealed by 40Ar–39Ar geochronology: the Mio-Pliocene Campiglia Marittima system (Tuscany, Italy) [PDF]

open access: yesScientific Reports, 2022
Petrology and timing of magmatic-hydrothermal systems and the linkage between plutonic and volcanic domains are central topics in geosciences, because of broad implications for natural hazards and exploitation of natural resources. We investigated by the
Gianfranco Di Vincenzo   +3 more
doaj   +2 more sources

Vanadium occupation and its leachability differences in trioctahedral and dioctahedral mica. [PDF]

open access: yesRSC Adv, 2019
Vanadium in black shale prefers to locate in the octahedron of mica and can be more easily released from trioctahedral mica than dioctahedral mica.
Zheng Q, Zhang Y, Xue N, Liu T, Huang J.
europepmc   +4 more sources

Very-low-grade phyllosilicates in the Aravis massif (Haute-Savoie, France) and the di-trioctahedral substitution in chlorite [PDF]

open access: yesEuropean Journal of Mineralogy, 2023
Very-low-grade mineral veins investigated in the impure limestone massif of the Aravis (Haute-Savoie, France) yielded a rich mineral assemblage typified by dolomite, calcite, quartz, illitic mica, fluorite and three types of chlorite.
B. Dubacq   +3 more
doaj   +1 more source

Molecular overtones and two-phonon combination bands in the near-infrared spectra of talc, brucite and lizardite [PDF]

open access: yesEuropean Journal of Mineralogy, 2022
The near-infrared (NIR) spectra of hydrous minerals display absorption bands involving multiple excitations of vibrational modes. They usually involve OH stretching modes, but their interpretation is not straightforward due to the combined effects of ...
E. Balan   +5 more
doaj   +1 more source

Simultaneous Removal of Mycotoxins by a New Feed Additive Containing a Tri-Octahedral Smectite Mixed with Lignocellulose

open access: yesToxins, 2022
Simultaneous removal of mycotoxins has been poorly addressed, and a limited number of studies have reported the efficacy of feed additives in sequestering a large spectrum of mycotoxins.
Donato Greco   +6 more
doaj   +1 more source

Synthesis of New Trioctahedral Mg-Smectite [PDF]

open access: yesChemistry Letters, 1986
Abstract New trioctahedral Mg-smectites were synthesized hydrothermally from homogeneous Mg–Si precipitates having a wide range of compositions, i.e., from Mg=3.2 to 6, vs. Si=8 in the atomic ratios. Dispersed solutions of the synthetic smectites formed transparent gels possessing good rheological properties.
Kazuo Torii, Takashi Iwasaki
openaire   +1 more source

Organic Control of Dioctahedral and Trioctahedral Clay Formation in an Alkaline Soil System in the Pantanal Wetland of Nhecolândia, Brazil. [PDF]

open access: yesPLoS ONE, 2016
Recent studies have focused on the formation of authigenic clays in an alkaline soil system surrounding lakes of the Nhecolândia region, Pantanal wetland.
Laurent Barbiero   +5 more
doaj   +1 more source

Vibrational spectroscopic study of three Mg–Ni mineral series in white and greenish clay infillings of the New Caledonian Ni-silicate ores [PDF]

open access: yesEuropean Journal of Mineralogy, 2021
This study presents and discusses infrared spectroscopic data of well characterised, naturally occurring trioctahedral layer silicates of the serpentine (Srp), talc (Tlc), and sepiolite (Sep) mineral groups, which are found in reactivated faults and ...
E. Fritsch   +5 more
doaj   +1 more source

Mineralogical characteristics of metamorphic massif units outcropping in Göksun, Afşin and Ekinözü (Kahramanmaraş) region

open access: yesBulletin of the Mineral Research and Exploration, 2020
This study aims to investigate and correlate the mineralogical-petrographic characteristics of Metamorphites in Göksun, Afşin and Ekinözü in the Southeast Anatolian Metamorphic Massifs.
Deniz Hozatlıoğlu   +3 more
doaj   +1 more source

Tribological Performance and Application of Antigorite as Lubrication Materials

open access: yesLubricants, 2020
Antigorite is a Mg-rich 1:1 trioctahedral-structured layered silicate mineral. In recent decades, many studies have been devoted to investigating the tribological performance and application of antigorite as lubrication materials.
Zhimin Bai   +3 more
doaj   +1 more source

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