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Alkali-Activated Metakaolins: Mineral Chemistry and Quantitative Mineral Composition [PDF]
Minerals, 2022 The reaction products resulting from the alkali-activation of metakaolin are impacted by the composition of the initial kaolin, and amount of alkali-activated kaolinite and water. The present study focused on analyzing these parameters on the metakaolins calcined at 800 °C from three kaolins, and the metakaolins’ alkali activation for 2, 3 and 28 days.
Marta Valášková +6 more
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Mineral chemistry and thermobarometry of Dorbeh diorite metamorphic aureole, south of Urmia [PDF]
پترولوژی, 2023 Hercynite-rich spinel is a typical mineral of both quartz-bearing and quartz-free metapelitic rocks that form under low-pressure high-temperature conditions in the granulite facies (Sengupta et al., 1991) or upper-amphibolite facies of regional and ...
Monir Modjarrad, Hadi Omrani
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Vestnik MGTU, 2021 Multi-stage deposition of metals from a sulfate solution with a high concentration of iron, aluminum, copper, zinc, and nickel has been studied. The concentrations of the components correspond to the composition of the sub-basement waters of the Gaisky ...
Kremenetskaya I. P. +4 more
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Frontiers in Earth Science, 2023 Understanding the evolution of magma storage conditions on volcanoes which have had more than one caldera-forming eruption (CFE) is important to know about past and present conditions, as a key to forecast future potential hazards.
Aditya Pratama +19 more
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Influence of Welding on the Dissolution of API- 5 L X60 in Simulated Soil Solution- Corrosion Protection by Phosphoric Compound- DFT Calculations [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2023 The present work aims to examine the susceptibility to soil corrosion of base metal (BM) and heat affected zone (HAZ) of API L5 X60 steel pipeline, and to assess the ability of Di-(2-ethylhexyl) phosphoric acid (D2EHPA) to inhibit the corrosion of the ...
Ouahiba Lahdiri +2 more
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Oxidative Phosphorus Chemistry Perturbed by Minerals [PDF]
Life, 2022 Life is a complex, open chemical system that must be supported with energy inputs. If one fathoms how simple early life must have been, the complexity of modern-day life is staggering by comparison. A minimally complex system that could plausibly provide pyrophosphates for early life could be the oxidation of reduced phosphorus sources such as ...
Arthur Omran +3 more
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Journal of Economic Geology, 2021 Introduction The Sari Gunay veining and breccia epithermal gold mineralization is situated between the Urumieh-Dokhtar magmatic belts and the Sanandaj-Sirjan metamorphic zone in central-NW Iran.
Behzad Mehrabi +2 more
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Phosphorus mineral evolution and prebiotic chemistry: from minerals to microbes [PDF]
Earth-Science Reviews, 2021 Minerals are known to control the availability of non-volatile and bio-essential elements at Earth’s surface, e.g., phosphorus (P). Therefore, the role of minerals in prebiotic chemistry is a focal point of research into the origins of life. However, the mineralogical diversity of earliest Earth is not definitively known.
Craig Walton +9 more
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Aquamarine from Massangana batholith, Rondônia State: mineral chemistry and fluid inclusion data
REM: International Engineering Journal, 2020 Beryl is usually found in granite-pegmatite systems. The addition of chromophore elements (V, Cr, Mn, Fe) into the crystalline structure favors color changes in beryl and thus generates some of the world’s expensive gems such as emerald, morganite ...
Ingrid de Souza Hoyer +2 more
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Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources
Metals, 2017 Metals with an average crustal abundance of <0.01 ppm, which are high in supply shortage due to soaring demand, can, under the excessive environmental risk and <1% recycling rate of their production, be termed as ‘critical’ in a limited geo ...
Sadia Ilyas +4 more
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