Results 11 to 20 of about 2,363 (234)
Бюллетень Почвенного института им. В.В. Докучаева, 2018 Morphological, physical-chemical properties, texture, salt composition mineralogical composition of the particle-size fractions 5 mkm of dark-humus quasigleyic solonchakous solonetzic cryoturbated deeply permafrost loamy-sandy soil developed from ...
V. L. Ubugunov +6 more
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Effect of chemically induced fracturing on the ice nucleation activity of alkali feldspar [PDF]
Atmospheric Chemistry and Physics, 2021 Feldspar is an important constituent of airborne mineral dust. Some alkali feldspars exhibit particularly high ice nucleation (IN) activity. This has been related to structural similarities of the ice (101‾0) prism planes and the (100) planes of alkali ...
A. A. Kiselev +7 more
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Geosciences, 2016 The mineralogical indices the Quartz Index (QI), Carbonate Index (CI) and Mafic Index (MI) for ASTER multispectral thermal infrared (TIR) data were applied to various geological materials for regional lithological mapping on the Tibetan Plateau.
Yoshiki Ninomiya, Bihong Fu
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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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Литосфера, 2017 The ophiolites of the northern slope of the Kuznetsk-Alatau Ridge are the most representative fragments of the sub-oceanic crust in the region. In this article, we present the results of a study of the metabasites from ophiolite paragenesis of the ...
N. A. Dugarova +3 more
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Spheroidal weathering of basalt from Gebel Qatrani, Fayum Depression, Egypt
Bulletin of the National Research Centre, 2021 Background Three stages of basalt weathering are known: early or incipient weathering, intermediate weathering and advanced weathering. The Late Oligocene basalt of Gebel Qatrani in Fayum Depression, Egypt, shows signs of early weathering, particularly ...
Essam El-Hinnawi +2 more
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The Alvarrões-Gonçalo Li project: an example of sustainable lithium mining [PDF]
Advances in Geosciences, 2018 Across Europe, small scale deposits of critical materials and/or strategic elements, such as W, Li and Sn, are not viable to mine and process using the traditional large scale mining and processing technologies due to their geological characteristics.
R. Sousa +8 more
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Bacterial assimilation reduction of iron in the treatment of non-metallics [PDF]
Acta Montanistica Slovaca, 2005 Natural non-metallics, including granitoide and quartz sands, often contain iron which decreases the whiteness of these raw materials. Insoluble Fe3+ in these samples could be reduced to soluble Fe2+ by bacteria of Bacillus spp.
Peter Malachovský +3 more
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Partitioning of barium between coexisting K-feldspars and plagioclase in the Bushveld granites from the Zaaiplaats area, South Africa [PDF]
Bulletin of the Geological Society of Finland, 1984 The barium contents of the coexisting K-feldspars and plagioclases in the Bushveld granites from the Zaaiplaats tin mine area were determined by electron microprobe analyses.
J.T. Ollila
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Land, 2022 The contribution of non-exchangeable soil K in the total K availability may be essential to K deficient soils; however, less attention has been paid so far for proposing soil tests that assess the bioavailable structural K that is solubilized by soil ...
Fotis Bilias +3 more
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