Results 21 to 30 of about 5,404 (212)

Fluid-rock interaction and dissolution of feldspar in the Upper Triassic Xujiahe tight sandstone, western Sichuan Basin, China

Open Geosciences, 2018
Secondary porosity in the Upper Triassic Xujiahe tight sandstone of the western Sichuan Basin is mainly the product of feldspar dissolution. In the Xu-4 Member, the upper reservoir of the Xujiahe Formation, feldspars are dissolved to a significant extent
Liu Sibing, Chen Anqing, Shen Zhongmin, Lv Zhengxiang, Zhang Xiaoxing   +4 more
doaj   +1 more source

ANALYSIS OF THE FACTORS AFFECTING THE GRINDABILITY OF K-FELDSPAR BY THE FULL FACTORIAL DESIGN

Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi, 2022
This study's aim is to investigate the wet and dry grindability of K-feldspar in a narrow grain size range in a stirred ball mill. In the evaluation of the grinding process, a full factorial design was used to observe the effects of the selected ...
Prof. Dr. Halil İpek, Kemal Bilir
doaj   +1 more source

Effect of Potassium Feldspar and Vermicompost Combined with Silicate Dissolving Bacteria on Yield of Wheat Plant Under Sandy Soils Conditions [PDF]

Journal of Soil Sciences and Agricultural Engineering
Organic farming is an alternative to regular farming. It makes use of organic residues rather than using chemical fertilizers and pesticides. A Field experiment was carried out during 2022-2023 growing season in Salehia, Egypt.
Nesreen Mohsen, Noha Mahgoub
doaj   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source

Deformation of feldspar at greenschist facies conditions – the record of mylonitic pegmatites from the Pfunderer Mountains, Eastern Alps [PDF]

Solid Earth, 2019
Deformation microstructures of albitic plagioclase and K-feldspar were investigated in mylonitic pegmatites from the Austroalpine basement south of the western Tauern Window by polarized light microscopy, electron microscopy and electron backscatter ...
F. Hentschel, C. A. Trepmann, E. Janots
doaj   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

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

Bulletin 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, Mustafa Haydar Terzi, Ahmet Fatih Oskay   +2 more
doaj   +1 more source

Not all feldspars are equal: a survey of ice nucleating properties across the feldspar group of minerals [PDF]

Atmospheric Chemistry and Physics, 2016
Mineral dust particles from wind-blown soils are known to act as effective ice nucleating particles in the atmosphere and are thought to play an important role in the glaciation of mixed phase clouds.
A. D. Harrison, A. D. Harrison, T. F. Whale, T. F. Whale, M. A. Carpenter, M. A. Holden, L. Neve, D. O'Sullivan, J. Vergara Temprado, B. J. Murray   +9 more
doaj   +1 more source

Provenance study on geochemical elements of detrital K-feldspar in Quaternary gravel layer in Yichang and its geological significance

Dizhi lixue xuebao, 2021
The Yichang area located at the exit of the Three Gorges is covered with a set of thick Quaternary gravel layers, recording the evolution of the paleoenvironment and the formation of the Yangtze River.
LIN Xu, LIU Haijin, WU Zhonghai, LIU Weiming, ZHANG Yang, CHEN Jixin   +5 more
doaj   +1 more source