Results 21 to 30 of about 3,041 (205)
Brazilian Journal of Geology, 2022 The Serra Branca pegmatite in northeastern Brazil is unique because of its megacrysts of bluish-green amazonite currently exploited for ornamental purposes and as high-quality gemstones.
Glenda Lira Santos +5 more
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MINERALOGY OF APATITE-AEGIRINE-MESOPERTHITE PEGMATITES OF MINE NO. 243 OF THE ILMENY STATE RESERVE (SOUTH URALS) [PDF]
Минералогия, 2023 The paper describes mineralogy of apatite-aegirine-mesoperthite pegmatites, which are located in a fenite halo at the southeastern contact of the Selyankino syenite block (Ilmeny State Reserve, South Urals). Two pegmatite veins are exposed by mines.
E.P. Makagonov +2 more
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Heliyon, 2021 This study presents the K-Ar geochronology for hydrothermal K-feldspar in plagioclase alteration, including methodology and application to the Toki granite, in central Japan.
Takashi Yuguchi +3 more
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Geologia Croatica, 2011 Potassium feldspars from different granitoids and gneisses of Papuk Mt. (Slavonia, Croatia) have been investigated by X-ray powder diffraction. Diffraction patterns classically observed as well as patterns calculated by Rietveld refinement were compared ...
Marija Horvat +3 more
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Ice nucleation properties of K-feldspar polymorphs and plagioclase feldspars [PDF]
Atmospheric Chemistry and Physics, 2019 The relation between the mineralogical characteristics of size-selected feldspar particles from 50 to 800 nm and their ability to act as ice-nucleating particles (INPs) in the immersion mode is presented.
A. Welti +3 more
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Molecules, 2022 Fulgurites are naturally occurring structures that are formed when lightning discharges reach the ground. In this investigation, the mineralogical compositions of core and shell compartments of a rare, iron-rich fulgurite from the Mongolian Gobi Desert ...
Ahmet Karadag +7 more
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The Tonigala granite, N. W. Ceylon [PDF]
Bulletin of the Geological Society of Finland, 1971 A pink, microcline granite at Tonigala in north-western Ceylon occurs as a concordant sheet, one to two miles wide and about 10 miles long, in a complex of migmatitic and granitic biotite and biotite-hornblende gneisses belonging to the PreCambrian ...
P.G. Cooray
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Potassium chloride recovery from mechanically activated microcline through the chlorination roasting and leaching route [PDF]
, 2023 In this study, effects of mechanical activation in the chlorination roasting and water leaching route known as CaCl2 process and developed for the production of potassium chloride (KCl) from potassium feldspar ores were studied. A microcline containing K-
Uysal, Turan +8 more
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Zeta potential prediction of dominant sandstone minerals via surface complexation modelling
Scientific African, 2023 Numerous injection water compositions have been developed by various researchers to optimize the oil recovery via wettability alteration. The ionic composition of the injected brine plays a profound role in the rock/brine and crude-oil/brine interfacial ...
Samuel Erzuah +9 more
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Monte Carlo simulation of interfacial adhesion between geopolymer binders and mineral aggregates
Конденсированные среды и межфазные границыSilico-aluminophosphate and alkali-aluminosilicate geopolymers are increasingly popular as a green alternative to traditional Portland cement concrete used in the construction industry.
Yakov M. Ermolov +2 more
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