Results 21 to 30 of about 698 (185)
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
Geosystems and Geoenvironment, 2022 In this study, we investigate phlogopite-rich pyroxenite from a major terrain boundary, i.e., the interface of Nallamalai Fold Belt and Nellore schist belt, in southern India.
Tushar Meshram +5 more
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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
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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
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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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Известия высших учебных заведений: Геология и разведкаBackground. The mineral association of ruby in the Snezhnoye deposit is represented by 7 rock-forming and 19 accessory minerals. Here, all minerals vary in their composition due to isomorphism.
A. K. Litvinenko, Sh. A. Odinaev
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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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Geostandards and Geoanalytical Research, Volume 50, Issue 3, Page 601-624, September 2026.Key Points Measurement of 86Sr at count rates < 1500 cps can result in statistical bias. Non‐linear signals in analogue detection mode (e.g., Rb) present a challenge for accurately dating high 87Rb/86Sr mica (> 1000). Accounting for these considerations, high 87Rb/86Sr mica are dated here with accuracies of ∼ 1%.
Duane C. Petts +5 more
wiley +1 more source
Chemical diffusion of fluorine in phlogopite
Geochimica et Cosmochimica Acta, 2022 Fluorine is a minor yet important component of volatiles in silicate minerals, and affects greatly the physicochemical properties of the host materials. The diffusivity of fluorine provides critical information for quantitatively understanding its many effects, but very few studies have been documented.
Zhang, Kai +4 more
openaire +5 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
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