Results 61 to 70 of about 127 (124)

Rare alkali metals in micas from Shakhdarinskaya miarolitic pegmatite (South-Western Pamir)

Известия Томского политехнического университета: Инжиниринг георесурсов, 2017
The study is focused on the mineralogy of rare-element rich tourmaline-bearing miarolitic pegmatities of the Shakhdarinskaya vein (SW Pamirs, Tajikistan). The results of the study are crucially important for understanding the regularities of distribution
Ekaterina Nikolaevna Sokolova, Sergey Zakharovich Smirnov, Elvira Nurfasovna Kungulova, Vladimir Nikolaevich Korolyuk, Sergey Ivanovich Konovalenko   +4 more
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Influence of Laumontite and Chlorite Mineral Characteristics on Reservoir Physical Properties in Junggar Basin

Energy Exploration & Exploitation
To deepen the understanding of chlorite and laumontite mineral characteristics within the Lower Wuerhe Formation in the Madong area of the Junggar Basin, a detailed investigation was carried out using thin sections, electron probe microanalysis (EPMA ...
Fei Liang, Jun Niu, Jin He, Cong Wang
doaj   +1 more source

In Vitro Efficacy Assessment of Mycotoxin-Detoxifying Agents Against Emerging Mycotoxins

Agriculture
The widespread occurrence of emerging mycotoxins (EMs) produced by Fusarium, Aspergillus, and Penicillium species has raised increasing concerns regarding food and feed safety.
Donato Greco, Vito D’Ascanio, Mariagrazia Abbasciano, Annalisa Treglia, Giuseppina Avantaggiato   +4 more
doaj   +1 more source

Mineralogy and crystal-chemistry of trioctahedral smectites from Turkey

Clays and Clay Minerals
Abstract This study focused on a detailed mineralogical and crystal-chemical analysis of Mg-smectites from four bentonite samples from Turkey. Mg-rich smectites, mainly associated with alkaline and evaporitic depositional conditions, are formed in environments such as salt lakes, brine springs, and sabkhas, as well as in hydrothermal systems, in ...
Adrián Lorenzo, Emilia García-Romero, Mefail Yeniyol, Mercedes Suárez   +3 more
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Determinación y Análisis de Fórmulas Estructurales de Esmectitas del Estado de Guanajuato Determinación y Análisis de Fórmulas Estructurales de Esmectitas del Estado de Guanajuato

Acta Universitaria, 2012
En este trabajo se determinan las fórmulas estructurales de minerales arcillosos contenidos en arcillas provenientes de localizaciones geológicas de los municipios de Comonfort, Jerécuaro, Victoria y San Francisco del Rincón, pertenecientes al Estado de
Esthela Ramos Ramírez, Salvador Aguilar Becerra, Yolanda G. Gallaga Ortega   +2 more
doaj  

Neoformation and transformation of trioctahedral clay minerals in diagenetic process

Journal of the Sedimentological Society of Japan, 1983
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Oxidation rates and redox stabilization of ferrous iron in trioctahedral smectites

Geochimica et Cosmochimica Acta, 2023
Iron(II)-bearing trioctahedral smectites (saponites) form during anoxic alteration of basaltic rock. They are predicted to have been widespread on the early Earth and are observed in the oceanic subsurface today. Smectite structures, including the occupancy of sites in the octahedral sheet, affect iron redox behavior but the rates and products of ...
Robert J. Kupper, Nanqing Zhou, Clara S. Chan, Aaron Thompson, Jeffrey G. Catalano   +4 more
openaire   +3 more sources

Minor- and trace-element composition of trioctahedral micas: a review

Mineralogical Magazine, 2001
AbstractMore than 19,000 analytical data mainly from the literature were used to study statistically the distribution patterns of F and the oxides of minor and trace elements (Ti, Sn, Sc, V, Cr, Ga, Mn, Co, Ni, Zn, Sr, Ba, Rb, Cs) in trioctahedral micas of the system phlogopite-annite/siderophyllite-polylithionite (PASP), which is divided here into ...
Tischendorf, G., Förster, H., Gottesmann, B.   +2 more
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The Vermiculitization of Trioctahedral Micas

Clay Minerals, 1973
AbstractThe alteration of thirty-nine trioctahedral micas to vermiculite has been characterized by the K level, which is determined by repeated measurements of the stationary K concentration in the altering solution and provides a practical way of comparing the sensitivity to alteration.
J. M. Rousseaux, P. G. Rouxhet, L. A. Vielvoye, A. J. Herbillon   +3 more
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Laboratory Alteration of Trioctahedral Micas

Clays and Clay Minerals, 1972
AbstractArtificial alteration of thirty-five trioctahedral and one dioctahedral micas by solutions varying in strength from 0·001 to 1·00 molal magnesium sulfate was found to approximate a normal exchange reaction after surface effects are eliminated. The equilibrium constants for the reaction:1/2Mg2++K−mica=Mg1/2−mica+K+(vermiculite)$1/2 {Mg^{2+}}+K ...
Syed N. Hoda, William C. Hood
openaire   +1 more source