Results 1 to 10 of about 5,305 (114)

Review of the Post-IR IRSL Dating Protocols of K-Feldspar [PDF]

open access: yesMethods and Protocols, 2020
Compared to quartz, the infrared stimulated luminescence (IRSL) of K-feldspar saturates at higher dose, which has great potential for extending the dating limit.
Junjie Zhang, Sheng-Hua Li
doaj   +2 more sources

Microfluidic Leaching of Soil Minerals: Release of K+ from K Feldspar. [PDF]

open access: yesPLoS ONE, 2015
The rate of K+ leaching from soil minerals such as K-feldspar is believed to be too slow to provide agronomic benefit. Currently, theories and methods available to interpret kinetics of mineral processes in soil fail to consider its microfluidic nature ...
Davide Ciceri, Antoine Allanore
doaj   +2 more sources

K-Ar geochronology for hydrothermal K-feldspar within plagioclase in a granitic pluton: constraints on timing and thermal condition for hydrothermal alteration [PDF]

open access: yesHeliyon, 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
doaj   +2 more sources

Mesoscale and microscopic structures record compaction and crystal-melt segregation in silicic mushes [PDF]

open access: yesScientific Reports
Gravitationally-driven compaction has been proposed as an important mechanism for crystal-melt segregation in silicic mushes. However, there is no microstructural evidence of crystal deformation consistent with compaction in silicic plutonic rocks.
Yun-Chao Liu, Yao-Hui Jiang, Bo-Ning Han
doaj   +2 more sources

Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Ice-nucleating particles (INPs) enable ice formation, profoundly affecting the microphysical and radiative properties, lifetimes, and precipitation rates of clouds.
M. Chatziparaschos   +18 more
doaj   +1 more source

K-feldspar enrichment in the Pacific pelagic sediments before Miocene

open access: yesProgress 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
doaj   +1 more source

Ice nucleation properties of K-feldspar polymorphs and plagioclase feldspars [PDF]

open access: yesAtmospheric 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
doaj   +1 more source

EFFECT OF BIOCHAR ON K AND P RELEASE FROM K-FELDSPAR & ROCK PHOSPHATE AND ITS IMPACT ON SOME GROWTH PARAMETER OF MAIZE PLANT [PDF]

open access: yesArab 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
doaj   +1 more source

Screening of Potassium Dissolving JX-10 Bacteria and Research on the Optimization of Potassium-dissolving

open access: yesKuangchan 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
doaj   +1 more source

Potassium recovery from Brazilian glauconitic siltstone by hydrothermal treatments

open access: yesREM: 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
doaj   +1 more source

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