Results 61 to 70 of about 9,636,025 (200)

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]

Geochronology
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, S. Riedesel, S. Riedesel, S. Opitz, A. Zander, A. Bell, H. Cieszynski, T. Reimann   +7 more
doaj   +1 more source

Geochemical modeling of diagenetic reactions between albitization of K-feldspar and plagioclase feldspar in sandstone reservoirs under the influence of CO2 partial pressure

Evolving Earth
Diagenetic albitization has been observed in sedimentary basins around the world. This process significantly changes the original composition of sandstones and the chemistry of the formation waters under the influence of partial pressure of CO2.
Marcos Antonio Klunk, Tiago Jonatan Girelli, Soyane Juceli Siqueira Xavier, Farid Chemale, Jr, Renzo D'souza, Mohuli Das, Sudipta Dasgupta   +6 more
doaj   +1 more source

K-feldspar – H2 interaction in the context of underground hydrogen storage [PDF]

Geologic reservoirs, including sandstones, can serve as sites for underground hydrogen storage (UHS). However, for a successful commercial application, a more detailed knowledge of the rock–pore-water–hydrogen gas (H2) systems is necessary.
Kővágó, Ákos, Árvai, Csaba, Falus, György, Mika, László Tamás, Gelencsér, Orsolya, Németh, Tibor, Tóth, Péter, Szabó-Krausz, Zsuzsanna, Breitner, Dániel, Mika, László   +9 more
core   +1 more source

Petrogenesis and tectonic implications of intrusive rocks in the Jiangjunmu porphyry deposit, East Kunlun orogeny, NW China

Frontiers in Earth Science
The newly discovered Jiangjunmu Cu–Au deposits are hosted within granodiorite porphyry and K-feldspar granite of the East Kunlun metallogenic belt. Previous understanding of these deposits has been limited due to a lack of comprehensive isotopic data. To
Yu Junzhen, Yu Junzhen, Li Dexian, Li Dexian, Gao Yalin, Gao Yalin, Ma Bo, Ma Bo, Zheng Youye, Zheng Youye, Zheng Youye, Junaid Khan, Asma Tahir   +12 more
doaj   +1 more source

Note on the Graphite-Free Corundum-K feldspar Gneiss in the Hida Metamorphic Belt, Central Japan [PDF]

, 1983
The association of corundum-K feldspar in a graphite-free rock is newly found in the western portion of the Hida Metamorphic Belt, central Japan. The equilibrium assemblage of the rock is corundum-K feldspar-plagioclase-biotite-apatite-zircon-ore with no
SUZUKI, Morihisa, OSAKABE, Tetsuya
core   +1 more source

Study on the characteristics of rubidium and cesium carrier minerals in the beneficiation process of lithium-bearing clay

Results in Engineering
Rubidium (Rb) and cesium (Cs), as rare alkali metals, play a critical role in high-tech industries. However, their efficient extraction from associated mineral resources is challenging, especially in lithium-bearing clays due to fine-grained ...
Keqiang Chen, Guichun He, Xinyang Yu, Mingming Yu, Zhiqiang Huang, Song Zou, Jie Min, Rushuang Shu   +7 more
doaj   +1 more source

The impact of secondary mineral formation on Na-K-geothermometer readings: a case study for the Valley of Geysers hydrothermal system (Kronotsky State Nature Biosphere Reserve, Kamchatka)

Записки Горного института, 2023
The temperature in the Valley of Geysers (Kamchatka) geothermal reservoir calculated using the feldspar Na-K-geothermometer has been steadily increasing over the past 10 years on average from 165 to 235 °C, which is close to the temperature values of a ...
Anastasia V. Sergeeva, Alexey V. Kiryukhin, Olga O. Usacheva, Tatiana V. Rychkova, Elena V. Kartasheva, Mariya A. Nazarova, Anna A. Kuzmina   +6 more
doaj  

The complexity of sediment recycling as revealed by common Pb isotopes in K-feldspar

, 2018
© 2018 China University of Geosciences (Beijing) and Peking University. Detrital zircon U–Pb geochronology has become the gold standard in evaluating source to sink relationships in sedimentary basins.
Noreen Evans (23287510), Christopher Kirkland (23290549), Brad McDonald (23436157), H. Cutten (23311663), S. Johnson (3832045)   +4 more
core  

Influence of Na-feldspar grains within the K-feldspar fraction on IRSL dating

The Dataset consists of sample information and the ages results of K-and Na-feldspar from Manuscript entiled "Influence of Na-feldspar grains within the K-feldspar fraction on IRSL dating".
Dongxue Li (17955290)
core   +1 more source

Time-Dependent Layer Formation on K-Feldspar Bed Particles during Fluidized Bed Combustion of Woody Fuels

, 2017
Despite frequent reports on layer characteristics on quartz bed particles, few studies have been found focusing on the layer characteristics on K-feldspar bed particles. The layer characteristics of K-feldspar bed particles in fluidized bed combustion of
Marcus Öhman, He, Hanbing,, Öhman, Marcus,, He, Hanbing, Skoglund, Nils,, Öhman, Marcus, Nils Skoglund, Hanbing He   +7 more
core   +1 more source