Showing 121 - 140 results of 327 for search '"quartz"', query time: 0.04s Refine Results
  1. 121

    Sources and Effects of Fluids in Continental Retrograde Shear Zones: Insights from the Kuckaus Mylonite Zone, Namibia by C. A. Stenvall, A. Fagereng, J. F. A. Diener, C. Harris, P. E. Janney

    Published 2020-01-01
    “…Together with a general scarcity of quartz veins, this suggests that fluid/rock ratios remained low in the KMZ. …”
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    Article
  2. 122

    Fractal statistics of brittle fragmentation by M. Davydova, S. Uvarov

    Published 2013-04-01
    “…Data processing of the fragmentation of glass plates under quasi-static loading and the fragmentation of quartz cylindrical rods under dynamic loading shows that the size distribution of fragments (spatial quantity) is fractal and can be described by a power law. …”
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  3. 123

    Fractal statistics of brittle fragmentation by M. Davydova, S. Uvarov

    Published 2013-03-01
    “…Data processing of the fragmentation of glass plates under quasi-static loading and the fragmentation of quartz cylindrical rods under dynamic loading shows that the size distribution of fragments (spatial quantity) is fractal and can be described by a power law. …”
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    Article
  4. 124

    PERFORATIONS ON THE SURFACE OF IRON CASTINGS by O. C. Komarov, E. V. Rozenberg, A. N. Karas, A. M. Neumiarzhytski, A. N. Apanasevich

    Published 2018-07-01
    “…It is shown that the cause of the formation of the veinings are the stresses in the surface layer of the core that arise when a-quartz is converted to a-tridymite. The possibility of reducing the number and size of veinings due to the selection of the composition of paints and the thickness of their layer on the surface of the rods was tested.…”
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  5. 125

    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
  6. 126

    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
  7. 127

    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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  8. 128

    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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  9. 129

    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
  10. 130

    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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  11. 131

    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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  12. 132

    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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  13. 133

    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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  14. 134

    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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  15. 135

    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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  16. 136

    Hydrothermal activity and its influence on hydrocarbon accumulation in deep dolomite reservoirs of the Ediacaran Dengying Formation, Sichuan Basin by Zhanlei Wang, Chan Jiang, Changcheng Yang, Yuqiang Jiang, Yifan Gu

    Published 2025-04-01
    “…Quartz and fluorite record the migration of deep high-temperature hydrothermal fluid along early fractures and residual pores. …”
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  17. 137

    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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  18. 138

    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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  19. 139

    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
  20. 140

    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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