Photoconductivity on K-feldspar [PDF]
International Journal of Modern Physics B, 2021 In the development of most phenomenological models used to explain the infrared excited luminescence, a major assumption is usually made in the degree of freedom the excited charge has. One of the two extremes is normally assumed: charge is free to move anywhere over the whole crystal, or it is confined close to the trap and the centers immediately ...
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K-feldspar enrichment in the Pacific pelagic sediments before Miocene
Progress in Earth and Planetary Science, 2023 The mineralogy of atmospheric silicate dust controls its interaction with clouds. K-feldspar has a remarkably high ice-nucleating activity, and its distribution may have influenced the global climate throughout Earth's history.
Yoichi Usui, Toshitsugu Yamazaki
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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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EFFECT OF BIOCHAR ON K AND P RELEASE FROM K-FELDSPAR & ROCK PHOSPHATE AND ITS IMPACT ON SOME GROWTH PARAMETER OF MAIZE PLANT [PDF]
Arab Universities Journal of Agricultural Sciences, 2019 Pot experiments were carried out using sand (collected from Ismailia ARS), in the greenhouse to study the effect of biochar application, on K and P release from their natural bearing minerals i.e.,K- feldspar and rock phosphate and\or bentonite on some ...
Manal El mahdy +3 more
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Kuangchan zonghe liyong, 2023 In this study, six strains with potassium-dissolving ability were screened from the soils collected from a K-feldspar mining area . One of them, which named JX-10 strain was identified as a kind of bacterium, by 16 S rRNA gene sequencing. Simultaneously,
Yongping Xue +3 more
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Tectonic history of the South Tannuol Fault Zone (Tuva region of the northern Central Asian Orogenic Belt, Russia) : constraints from multi-method geochronology [PDF]
, 2020 In this study, we present zircon U/Pb, plagioclase and K-feldspar Ar-40/Ar-39 and apatite fission track (AFT) data along the South Tannuol Fault Zone (STFZ).
De Grave, Johan +6 more
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Potassium recovery from Brazilian glauconitic siltstone by hydrothermal treatments
REM: International Engineering Journal, 2020 Silicate rock Verdete, collected in the central region of Minas Gerais state (Brazil) and composed mostly of micas (glauconite and muscovite) and tectosilicates (K-feldspar and quartz), was hydrothermally treated with several reactants in order to ...
Frederico Amorim Safatle +2 more
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Characterization of potassium solubilizing bacteria isolated from corn rhizoplane
Agronomía Colombiana, 2021 Potassium is one of the most important elements in plant growth and development. Most of the potassium reserves on Earth are in insoluble mineral form, which represents a limitation for the absorption of this nutrient by plants.
Reneé Pérez-Pérez +5 more
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CO2-crystal wettability in potassic magmas. Implications for eruptive dynamics in light of experimental evidence for heterogeneous nucleation. [PDF]
, 2017 The volatile content in magmas is fundamental for the triggering and style of volcanic eruptions. Carbon dioxide, the second most abundant volatile component in magmas after H2O, is the first to reach saturation upon ascent and depressurization.
Fanara, S. +4 more
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Rubidium-rich feldspars and associated minerals from the Luolamäki pegmatite, Somero, Finland [PDF]
Bulletin of the Geological Society of Finland, 1998 Rubidium feldspar occurs near the core zone of the highly fractionated petalite-subtype Luolamäki granitic pegmatite in intimate intergrowth with other feldspars which are part of a characteristic sequence of alteration of pollucite.
D.K. Teertstra +2 more
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