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  • Systematic review of feldspar beneficiation and its comprehensive ...

    2018.11.1  Slimes in feldspar flotation (generally −38 μm size for feldspar mineral) have a negative effect on flotation by coating the feldspar surfaces owing to electrostatic

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  • The carbonic acid-rock reaction in feldspar/dolomite

    2021.12.5  The carbonic acid-rock reaction in feldspar/dolomite-rich tightsand and its impact on CO2-water relative permeability during geological carbon storage -

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  • Effects of feldspar and salinity on the mineral sequestration capacity ...

    2016.9.16  For the mineral composition with K-feldspar present, CO2 mineral trapping capacity decreases with salinity, while with albite instead of K-feldspar, it increases with

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  • ACP - The impact of (bio-)organic substances on

    2022.3.17  Abstract. Potassium feldspars (K-feldspars), such as microcline, are considered key dust minerals inciting ice nucleation in mixed-phase clouds. Besides the high ice nucleation activity of microcline,

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  • Contribution of Feldspar Minerals to pH during Smart Water

    2019.11.13  Temperature varied between 23 and 130 °C, and brine salinity varied from 0 ppm (deionized water) to 100 000 ppm NaCl in batch tests. The sandpacks were

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  • Contribution of Feldspar Minerals to pH during Smart Water

    2020.1.16  In this study, static batch tests and dynamic sandpack flooding tests have been performed to investigate the pH development in the brine phase in contact with

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  • The carbonic acid-rock reaction in feldspar/dolomite-rich

    2021.9.16  Corpus ID: 240505130 The carbonic acid-rock reaction in feldspar/dolomite-rich tightsand and its impact on CO2-water relative permeability during

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  • Freezing efficiency of feldspars is affected by their history of ...

    Here, freezing temperature of water droplets deposited on feldspar minerals has been measured as a function of consecutive freeze–thaw cycles. We found an increase of the

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  • Impact of residual fuel ash layers on the catalytic activation

    2020.3.14  Fürsatz, K., Kuba, M., Janisch, D. et al. Impact of residual fuel ash layers on the catalytic activation of K-feldspar regarding the water–gas shift reaction. Biomass

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  • ACP - The impact of (bio-)organic substances on

    2022.3.17  Abstract. Potassium feldspars (K-feldspars), such as microcline, are considered key dust minerals inciting ice nucleation in mixed-phase clouds. Besides the high ice nucleation activity of microcline,

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  • Mineral Weathering SpringerLink

    2017.10.7  Mineral weathering is a process characterized by chemical and physical breakdown of geologic materials, accompanied by the generation of dissolved solutes plus relatively stable new mineral phases. Weathering is important as a (i) source of nutrients such as calcium, magnesium, potassium, sodium, iron, silica , and a variety of trace

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  • Impact of forest tree species on feldspar weathering rates

    2000.6.1  An in situ experimental approach was used to test the impact of several forest tree species on weathering of a plagioclase used as a test-mineral. Tree species were Norway spruce, Scots pine, sessil oak, pedunculated oak and European beech. The experiment was carried out by putting a fixed mass of test-mineral into the soil under

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  • (PDF) Implementation of Feldspar as a partial ... - ResearchGate

    2021.11.24  In this experimental study, the impacts of replacing cement by Mica and Feldspar on rheological, mechanical and thermal durability of self-compacting mortars (SCMs) are investigated.

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  • Identifying Shocked Feldspar on Mars Using Perseverance

    2022.5.3  The Perseverance rover (Mars 2020) mission, the first step in NASA’s Mars Sample Return (MSR) program, will select samples for caching based on their potential to improve understanding Mars’ astrobiological, geological, geochemical, and climatic evolution. Geochronologic analyses will be among the key measurements planned for

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  • Air quality modeling for impact evaluation of a mica, feldspar

    2021.12.22  The dust emission from the mining area is the primary source of air pollution for the surrounding environment. This paper deals with the study of baseline air quality assessment and air pollution modeling exercise for a mica, feldspar, and quartz mine to predict the maximum dust concentration from the mine with and without control

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  • Effects of feldspar and salinity on the mineral sequestration capacity ...

    2016.9.16  Mineral sequestration of CO2 is considered to be the safest mechanism in the long-term storage of CO2 in deep saline aquifers. This study aims to investigate the effect of feldspar and salinity on the mineral sequestration capacity of CO2 in deep high-salinity brine aquifers by taking Jiangling Depression of Jianghan Basin for instance.

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  • The carbonic acid-rock reaction in feldspar/dolomite

    2021.12.5  Feldspar (including K-feldspar and albite) and dolomite (including dolomite and ankerite) take 34.9% of the rock minerals, which react with carbonic acid easily. Clay minerals are 17.5%, including illite, chlorite, and kaolinite. ... The formation water salinity will impact on the reaction of CO 2 /water/rock. The first thing need to be ...

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  • The ESR Signals in Different Minerals and the Bleaching

    2023.8.21  and any remnant feldspar, mica, and mineral inclusions. The sample was then rinsed with distilled water twice before HNO3 (20%) was added to remove the remnant fluorite on the granular surfaces. The sample was then cleaned twice with distilled water and dried in an oven at a temperature of 40 C. Each quartz sample was checked with

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  • A review of feldspar alteration and its geological significance

    2019.4.1  Feldspar dissolution reaction occurs at the water-feldspar interface, thus, available surface area is a critical factor controlling the overall dissolution rate, and feldspar dissolution rate increases as the available surface area increase. ... 1999), while acetic and propionic acids have little impact on the feldspar dissolution rate ...

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  • ACP - Role of K-feldspar and quartz in global ice

    Abstract. Ice-nucleating particles (INPs) enable ice formation, profoundly affecting the microphysical and radiative properties, lifetimes, and precipitation rates of clouds. Mineral dust emitted from arid regions,

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  • Particle Size Controls on Water Adsorption and Condensation Regimes at ...

    2016.8.26  Atmospheric water vapour interacting with hydrophilic mineral surfaces can produce water films of various thicknesses and structures. In this work we show that mineral particle size controls water ...

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  • Guanghui YUAN 远光辉 Professor PhD

    Feldspar dissolution, quartz cementation, and clay cementation are significant diagenetic processes in deep-water fan feldspar-rich sandstones in the Shengtuo area, Dongying sag (East China).

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  • The importance of mineralogical composition for the

    2022.7.6  Respirable mineral particles represent a potential health hazard in occupational settings and ambient air. Previous studies show that mineral particles may induce cytotoxicity and inflammatory reactions in vitro and in vivo and that the potency varies between samples of different composition. However, the reason for these differences is

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  • The ESR Signals in Different Minerals and the Bleaching of Feldspar

    2023.8.21  Using sieving, carbonate-organic matter removal, water flotation, magnetic separation, heavy liquid separation, and HF solution etching, we separated quartz, feldspar (plagioclase), mica, and the heavy minerals and measured the ESR signal in each of them to examine the impact of impurities within mineral grains on the ESR signals.

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  • (PDF) Study of Potassium Release from K-Feldspar

    2018.11.19  Soil Science and water Resources Depar tment- College of Agriculture- Uni versity of ... 30º 35' 41.901" N and longitude, 32º 16' 45.834" E) to study impact of feldspar acidulation on potassium ...

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  • (PDF) The impact of (bio-)organic substances on the ice

    2022.3.17  The impact of (bio-)organic substances on the ice nucleation activity of the K-feldspar microcline in aqueous solutions ... in (a) water, (b) 1 wt % citric acid (a w ≈ 0.995), and (c) 1 wt ...

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  • Evaluating the eco-compatibility of mortars with feldspar

    2022.6.1  1. Introduction. Increased cement production and usage have had a significant adverse impact on the environment, such as increased CO 2 emissions. As much as 700–900 kg of CO 2 is emitted in the process of manufacturing 1 t of cement; this amount accounts for 7–8% of greenhouse gases worldwide [1].Thus, research on eco-friendly

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  • Coupled mineral alteration and oil degradation in

    2019.3.19  The experimental results show that organic-inorganic interactions occur between the organic oil and inorganic feldspar in the presence of water. Water promotes the oil degradation by an extra supply of H+ and OH ions. In the oil-water-rock systems, mutual exchanges of H+ and OH ions among minerals, water, and hydrocarbons probably result

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  • Systematic review of feldspar beneficiation and its comprehensive ...

    2018.11.1  Feldspar occurs in the pegmatite rocks and are associated with quartz and muscovite near the top of the granite (Fig. 1) (Pollet-Villard et al., 2017, Simmons et al., 2016, Swanson and Veal, 2012).The feldspar storage is approximately 10 billion tons worldwide, mainly occurring in North America, Europe, and East Asia (Zhang,

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  • Feldspars in Weathering SpringerLink

    Abstract. Feldspar weathering occurs via dissolution of all components into solution, with the subsequent precipitation of secondary minerals from solution, and it is the feldspars dissolution rate which controls the overall rate of feldspar weathering. The rate of feldspar dissolution is controlled by the kinetics of surface reactions at the ...

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  • A comparative study of the dissolution mechanisms of

    2022.4.21  The dissolution of amorphous and crystalline oligoclase, a Na-feldspar with traces of Ca and K, was investigated at 90 °C and acidic pH of 1.5 and 3 to unravel the impact of long- and short-range ...

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  • Impact of residual fuel ash layers on the catalytic

    2021.1.21  ORIGINAL ARTICLE Impact of residual fuel ash layers on the catalytic activation of K-feldspar regarding the water–gas shift reaction Katharina Fürsatz1,2 Matthias Kuba1,2 Daniel Janisch2 Kouessan Aziaba2 Christoph Hammerl2 Damian Chlebda3 Joanna Łojewska3 Hermann Hofbauer2 Received: 9 December

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  • Nanoplastics interaction with feldspar and weathering

    2022.4.20  More than 90% of the Earth's crust is composed of silicate minerals. Among them, the feldspar group of minerals (orthoclase-albite-anorthite) comprised half of the crust (Chardon et al., 2006; Crundwell, 2014). River water is continuously eroding feldspathic rocks and can release the feldspar minerals into the water (Drever and

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  • Coupled mineral alteration and oil degradation in thermal oil-water ...

    2019.3.1  The mineral alterations from feldspar to boehmite, illite, and muscovite promote the oil degradation in the oil-deionized water-feldspar systems with the mutual ion exchange. Due to a possible competition between the Brønsted acid sites in the minerals and the halide anions or the direct replacement of K-feldspar by albite, the mineral ...

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  • (PDF) Feldspar Dissolution and Its Influence on Reservoirs: A

    2018.9.24  Feldspar dissolution is a common feature in clastic rock reservoirs of petroliferous basins and has an important influence on reservoir quality.

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  • Characteristics, formation mechanism and influence on

    2022.6.1  Sichuan Basin is a multi-spin cyclosuperimposed basin with rich oil and gas [6, 7].In Wufeng Period of Late Ordovician Epoch and Longmaxi Period of Early Silurian Epoch, the Sichuan Basin is a deep-water shelf to the NE–SW surrounded by three uplifts in a limited sea area (Fig. 1).The thickness of black shale can reach 60 m in low-energy,

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  • CO 2 sequestration in feldspar-rich sandstone: Coupled

    2015.7.1  Semantic Scholar extracted view of "CO 2 sequestration in feldspar-rich sandstone: Coupled evolution of fluid chemistry, mineral reaction rates, and hydrogeochemical properties" by B. Tutolo et al. ... The carbonic acid-rock reaction in feldspar/dolomite-rich tightsand and its impact on CO2-water relative permeability during

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  • Evaluating the role of feldspar on the resistivity of alkali

    2022.7.27  In this study, the effect of K-feldspar on the behavior of alkali-activated slag pastes (AAS) before and after exposure to seawater was evaluated by measuring the compressive strength and the microstructure. To achieve this objective, the mixtures were prepared upon partial replacement of ground granulated-blast furnace slag (GGBFS) with

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  • GChron - Potential impacts of chemical weathering on feldspar ...

    Abstract. Chemical weathering alters the chemical composition of mineral grains. As a result, trapped-charge dating signals of primary silicates may be progressively modified. In this study, we treated three feldspar specimens to understand the effect of proton- and ligand-promoted dissolution on their luminescence properties. We conducted kinetic

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