Showing 101 - 120 results of 273 for search '"quartz"', query time: 0.06s Refine Results
  1. 101

    BENARD CELLS – A POSSIBLE MECHANISM OF THE FORMATION OF SUBAQUATIC AND SUBFLUIDIC STALACTITES by V.A. Popov, M.V. Tsyganko

    Published 2023-09-01
    “…The phenomenon is illustrated on examples of malachite, goethite, chalcedony, quartz-feldspar and magnetite stalactites.…”
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    Article
  2. 102

    RESEARCH OF THE CLEANING PROCESS REGULARITIES FOR THE MODEL WASTE WATER SYSTEMS WITH THE «VODOKANALNY» POLYACRYLAMIDE FLOCULANT by Eugeniya Y. Shachneva, Viktor Y. Khentov

    Published 2020-08-01
    “…The influence of the nature and concentration of (poly) electrolytes on the flocculation rate was studied using BAU and quartz sand suspensions as an example. Graphical dependences of the described quantities on the concentration of introduced reagents are given. …”
    Article
  3. 103

    Optical Observations of Sputtered Au-nanostructures and Characterizations by Sabah Jameel Mezher, Mohammed O. Dawood, Bahjat B. Kadhim

    Published 2024-03-01
    “…In the current work, the gold nano-islands were sputtered onto quartz surface substrates using a DC sputtering unit with an optimized chamber. …”
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  4. 104

    Shale Heterogeneity in Western Hunan and Hubei: A Case Study from the Lower Silurian Longmaxi Formation in Well Laidi 1 in the Laifeng-Xianfeng Block, Hubei Province by Peng Zhang, Junwei Yang, Yuqi Huang, Jinchuan Zhang, Xuan Tang, Chengwei Liu

    Published 2022-01-01
    “…With a total organic carbon (TOC) of 0.41%-4.18% and an organic matter maturity (Ro) of 3.09%-3.42%, the shales of the Longmaxi Formation from well Ld1 are in an overmature stage, and their mineral composition is mainly quartz (5%-66%) and clay minerals (17.8%-73.8%). The main pore types are intergranular pores, intragranular pores, microfractures, and organic pores. …”
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    Article
  5. 105

    The Influence of Reservoir Composition on the Pore Structure of Continental Shale: A Case Study from the Qingshankou Formation in the Sanzhao Sag of Northern Songliao Basin, NE Chi... by Jianguo Yang, Liu Wang, Shichao Li, Cheng Zuo, Fei Xiao, Yuchu Chen, Yulai Yao, Longhui Bai

    Published 2021-01-01
    “…The results show that intergranular pores related to clay minerals and quartz, intragranular dissolution pores related to feldspar, and other mineral intragranular pores are developed. …”
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    Article
  6. 106

    Chemical, Mineralogical, and Refractory Characterization of Kaolin in the Regions of Huayacocotla-Alumbres, Mexico by L. M. Romero-Guerrero, R. Moreno-Tovar, A. Arenas-Flores, Y. Marmolejo Santillán, F. Pérez-Moreno

    Published 2018-01-01
    “…With the X-ray diffraction technique, andalusite and kaolinite were identified as the majority phases in Huayacocotla and quartz was identified as the majority phase in Alumbres. …”
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    Article
  7. 107

    Understanding of Long-Term CO2-Brine-Rock Geochemical Reactions Using Numerical Modeling and Natural Analogue Study by Huixing Zhu, Tianfu Xu, Hailong Tian, Guanhong Feng, Zhijie Yang, Bing Zhou

    Published 2019-01-01
    “…The combination of numerical simulation and natural analogue study indicates that the joint effects of long-term CO2-brine-rock reactions and scour of kaolinite increase the pore space of the host rock and result in an increase in quartz content in the sandstone.…”
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  8. 108

    Data on compositional diversity of textural varieties of lake superior-type Banded Iron Formation (BIF) of the Njweng prospect, Mbalam iron ore district, southern CameroonMendeley... by Dieudonne Charles Isidore Ilouga, Cheo Emmanuel Suh, Akumbom Vishiti, Elisha Muntum Shemang

    Published 2025-02-01
    “…The selected samples for geochemical studies represented the various facies: oxide facies BIF composing of magnetite, hematite/martite, quartz; the silicate facies BIF composing of quartz, magnetite, hematite/martite and goethite. …”
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    Article
  9. 109

    Mineralogy, alteration, fluid inclusions microthermometry and genesis of the Cu-Au Kalateh Dasht deposit, south of Shahrood, NE Iran by Mohadeseh Eskandari, Fardin Mousivand, Maryam Sheibi, Bernd Lehmann

    Published 2024-12-01
    “…The gangue minerals include comb quartz, crustiform, and a small amount of amethyst as veins and blades. …”
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  10. 110

    POROUS FLY ASH-BASED GEOPOLYMER USABLE AS AN UNCONVENTIONAL CONSTRUCTION MATERIAL by BOGDAN-VALENTIN PAUNESCU, LUCIAN PAUNESCU, ENIKO VOLCEANOV

    Published 2024-01-01
    “…Other mixture components were expanded perlite as siliceous additive, usual fine aggregate (quartz sand), and less frequently used surfactant (olive oil). …”
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  11. 111

    Experimental study of the piezoelectricity of Middle Pleistocene loess in the Weibei region, China by Yanlin JING, Jie LIU, Qingying LIU, Xiaoxiao DUAN, Na XIE, Dengke YANG

    Published 2025-01-01
    “…ObjectiveQuartz, the piezoelectric material discovered the earliest, has found widespread applications in industry, military fields, and daily life due to its piezoelectricity. …”
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  12. 112

    Impact of rock mineralogy on reactive transport of CO2 during carbon sequestration in a saline aquifer by Mohamed Gamal Rezk, Ahmed Farid Ibrahim

    Published 2025-01-01
    “…The simulation results highlight the profound effects of different minerals on the CO2 trapping mechanisms. Quartz exhibits minimal dissolution, while calcite plays a crucial role, initially dissolving due to low pH and later precipitating after around 300 years. …”
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  13. 113

    Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism by Mikael Tillberg, Olga M. Maskenskaya, Henrik Drake, Johan K. Hogmalm, Curt Broman, Anthony E. Fallick, Mats E. Åström

    Published 2019-01-01
    “…The greisen consists of coarse-grained quartz, muscovite, and fluorite, whereas the veins mainly contain quartz, calcite, epidote, chlorite, and fluorite in order of abundance. …”
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  14. 114

    ORE MINERALS OF THE BURANOVSKOE TUNGSTEN DEPOSIT (SOUTHERN URALS) by A.V. Kasatkin, A.M. Kuznetsov, N.A. Arzamastsev3

    Published 2022-09-01
    “…They occur as individual grains and intergrowths with each other or simple sulfides and form numerous inclusions in fahlores in quartz-scheelite veins. Among the oxidation products of fahlores, galena and tetradymite, we found rare supergene minerals – telluroperite and perite, which form a limited solid solution series, as well as choloalite and a Ag and Hg sulfide-iodide corresponding to hanauerite by its chemical composition. …”
    Article
  15. 115

    POLYAKOV LOG COARSE GARNET OCCURRENCE IN THE SOUTH URALS by V.A. Popov, M.A. Rassomakhin, S.V. Kolisnichenko

    Published 2023-06-01
    “…Muscovite, ilmenite, epidote, quartz and apatite remain preserved in the primary schist orientation of individuals. …”
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  16. 116

    Inorganic Geochemical Study of the Siliciclastic Sediments penetrated by Ash-3 Well in the Greater Ughelli Depobelt, Niger Delta Basin, Nigeria by K. Itiowe, B. Kpege, O.N. Ekone, O.J. Aliu

    Published 2021-11-01
    “…Using Herron’s plot for classification shows that the siliciclastic sediments were classified into Fe-shale, Fe-sand and quartz arenites fields. Roser and Korsch’s discriminant function diagrams for provenance signature and tectonic setting show quartzose sedimentary provenance and passive margin tectonic setting fields respectively. …”
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  17. 117

    Inorganic Geochemical Study of the Siliciclastic Sediments penetrated by Ash-3 Well in the Greater Ughelli Depobelt, Niger Delta Basin, Nigeria by K. Itiowe, B. Kpege, O.N. Ekone, O.J. Aliu

    Published 2021-11-01
    “…Using Herron’s plot for classification shows that the siliciclastic sediments were classified into Fe-shale, Fe-sand and quartz arenites fields. Roser and Korsch’s discriminant function diagrams for provenance signature and tectonic setting show quartzose sedimentary provenance and passive margin tectonic setting fields respectively. …”
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    Article
  18. 118

    Mineralized Granitic Porphyry of the Yangla Copper Deposit, Western Yunnan, China: Geochemistry of Fluid Inclusions and H-O, S, and Pb Isotopes by Xinfu Wang, Bo Li, ShenJin Guan, Olivier Nadeau, Guo Tang

    Published 2020-01-01
    “…The magmatic-hydrothermal fluid subsequently deposited porphyry-type quartz-calcite veins, veinlets, and stockwork mineralization.…”
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  19. 119

    Numerical Investigation of the Combustion in an Improved Microcombustion Chamber with Rib by Hai Chen, Wei-qiang Liu

    Published 2019-01-01
    “…., 0.6) may result in the destruction of the combustor because the wall temperature has exceeded the acceptable temperature of wall material quartz. Therefore, the improved microcombustor is recommended for micro-thermo-photovoltaic systems.…”
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  20. 120

    Physiochemical Characterization of Ethiopian Mined Kaolin Clay through Beneficiation Process by Adane Adugna Ayalew

    Published 2023-01-01
    “…The XRD diffractogram identified kaolin clay as the main mineral phase in the existence of quartz, halloysite, and chlorite.…”
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    Article