Results 1 to 10 of about 26,623 (334)

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

EFFECT OF K-FELDSPAR ROCK FERTILIZER ON GROWTH AND MINERAL CONTENT OF MORINGA SEEDLINGS (MORINGA OLEIFERA) [PDF]

open access: diamondScientific Journal of Flowers and Ornamental Plants, 2014
A field experiment was conducted at the Botanical Gardens Research Department Land, Hort. Res. Inst. Alex., Egypt,during 2011-2012 and 2012-2013 seasons to study the effect of Kfeldspar rock fertilizer on growth and mineral content of Moringa seedlings ...
A Abou-Amer, H. El-Tayeb
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

The Thermoluminescence Parameters of Irradiated K-Feldspar

open access: yesEast European Journal of Physics, 2023
Isothermal decay of the TL glow curve has been studied at ambient temperature. Heating of feldspar at 600ºC leads to increased sensitivity of the samples upon irradiation for the whole range of glow curve.
Sahib Mammadov   +3 more
doaj   +2 more sources

How much K is OK? Evaluating different methods for K-concentration determination and the effect of the internal K concentration on feldspar luminescence dating [PDF]

open access: goldGeochronology
For luminescence dating of potassium-rich (K) feldspars, the presence of 40K within the K-feldspar grains contributes significantly to the internal dose rate of the sample.
L. A. E. Maßon   +7 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

Pegmatites and alkali feldspar granites as sources of industrial K-feldspar: A study from Borucu, Aksaray, Central Türkiye

open access: diamondBulletin of the Mineral Research and Exploration
The Borucu (Aksaray) region, within the Central Anatolian Crystalline Complex, comprises a variety of rocks, including granite, alkali feldspar granite (AFG), pegmatite, and aplite dikes.
Gökhan Demirela   +2 more
doaj   +2 more sources

Sustainable method to extract potassium from K-feldspar using limestone flotation tailings

open access: diamondAcademia Engineering
This study explores the potential use of limestone flotation tailings (LFT) for recovering potash values from K-feldspar (K2O, 11.4 wt.%). High-temperature leaching tests of potassium-enriched feldspar powder using various mineral acids reveal
Sandeep Kumar Jena   +3 more
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

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