Results 21 to 30 of about 666 (181)
ZONATION OF PHLOGOPITE OF CARBONATITE-PEGMATITES OF THE BULDYM DEPOSIT OF THE VISHNEVYE MOUNTAINS (SOUTH URALS) [PDF]
Минералогия, 2017 In a plate 19 cm in size from the columnar crystal of phlogopite Buldym deposit in the Southern Urals, we studied the composition of alternating greenish-brown, yellowish-brown and darker brown areas by electron-probe microanalysis.
V.I. Popova +3 more
doaj
Геодинамика и тектонофизика, 2020 The study of the Bol’shaya Tagna alkaline-carbonatite massif and adjacent areas was focused on the mineral and chemical compositions of minerals, the distribution of petrogenic and trace elements in pyroxene-free alkaline picrites in veins and dikes ...
V. B. Savel'eva +3 more
doaj +1 more source
International Journal of Thermofluids, 2023 In this paper, evaporation rate of nanofluids in subatmospheric pressure with different hydrophilic particles has been experimentally investigated, and compared with deionized water evaporation rate.
Aliasghar Amirzadeh +2 more
doaj +1 more source
Conversion of Fluor-Phlogopite to Hydroxy-Phlogopite in NaOH and LiOH Hydrothermal Solutions
Journal of the Ceramic Society of Japan, 1991 Exchange of fluorine for hydroxide ions in synthetic fluor-phlogopite (KMg3AlSi3O10F2) was studied in hydrothermal solutions of various concentrations of NaOH and LiOH. The pressure applied was fixed at 100MPa, temperatures were 300°, 450° and 600°C, and the experimental duration was 7 days.
Taketoshi FUJITA +2 more
openaire +2 more sources
Kornerupine-bearing gneiss from Inanakafy near Betroka, Madagascar [PDF]
Bulletin of the Geological Society of Finland, 1969 This paper presents mineralogical data for the constituents of a kornerupine-bearing gneiss from Inanakafy near Betroka, Madagascar. Chemical analyses are given of the phlogopite, kornerupine, orthopyroxene and cordierite occurring in the rock.
O. v. Knorring +2 more
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Compressibility of 2M1 muscovite-phlogopite series minerals
Journal of Molecular Modeling, 2019 Muscovite (Ms) and phlogopite (Phl) belong to the 2:1 dioctahedral and trioctahedral layer silicates, respectively, and are the end members of Ms-Phl series minerals. This series was studied in the 2M1 polytype and modeled by the substitution of three Mg2+ cations in the Phl octahedral sites by two Al3+ and one vacancy, increasing the substitution up ...
Alfonso Hernández-Laguna +8 more
openaire +3 more sources
REM: International Engineering Journal, 2022 A carbonate-silicate low weathering phosphate ore from an igneous origin deposit in Southeastern Brazil presents a challenge mainly for apatite flotation from its gangue minerals, calcite and dolomite, plus the presence of phlogopite, diopside, magnetite,
Isabel de Sousa Batista Carvalho +3 more
doaj +1 more source
Archaeometry, EarlyView.ABSTRACT The hillfort of Castrejón de Capote is one of the best investigated settlements of Late Iron Age southwest Iberia. Located in the territory that the classical sources attributed to the Celtici, it was occupied between the early 4th and the 1st centuries bce.
Beatrijs de Groot +2 more
wiley +1 more source
MICA COMPOSITION REFLECTING CONDITIONS OF AILLIKITE FORMATION IN ZIMA COMPLEX OF EASTERN SIBERIA
Геодинамика и тектонофизикаFour types of mica were identified in the macrocryst and fine porphyry aillikites from the Yarma zone of the Urik-Ija graben considering specific features of morphology, chemical composition, zonation and crystallization conditions.
V. B. Savelyeva +4 more
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Geostandards and Geoanalytical Research, EarlyView.Key Points Six new Ca‐Mg‐Fe carbonate reference materials are available to the global geochemical community for calibrating oxygen and carbon isotope ratios by SIMS. Significant compositional matrix effects were observed in the dolomite‐ankerite and magnesite‐siderite series during SIMS analysis. Compositional matrix effects correlate with Fe variation.
Maria Rosa Scicchitano +10 more
wiley +1 more source