Showing 81 - 100 results of 273 for search '"quartz"', query time: 0.05s Refine Results
  1. 81

    The Metallogeny of the Tieling Cu-Mo Porphyry Deposit in Eastern Tianshan, NW China: New Insights from Zircon U-Pb, Fluid Inclusion, and H-O-S Stable Isotope Analyses by Ping Li, Ting Liang, Fan Huang, Tongyang Zhao, Zhixin Zhu, Yong Li, Jing Feng, Lei He

    Published 2021-01-01
    “…Three stages of hydrothermal mineralization were identified, including quartz+K-feldspar+pyrite±molybdenite±magnetite (stage I), quartz+molybdenite+pyrite+chalcopyrite (stage II), and quartz+pyrite±molybdenite±epidote (stage III). …”
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  2. 82

    BISMUTH MINERALS FROM YUGO-KONEVO AND POROKHOVSKOE TUNGSTEN DEPOSITS (SOUTH URALS) by A.V. Kasatkin, E.V. Belogub, A.M. Kuznetsov, K.A.Novoselov, R. Škoda, F. Nestola, D.A. Rogov

    Published 2023-09-01
    “…The Bi minerals occur as individual grains or intergrowths in fluorite-muscovite-quartz veins with hübnerite and scheelite , inclusions in quartz and intersticial aggregates between pyrite, sphalerite and galena. …”
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    Article
  3. 83

    Experimental and numerical studies on scaling and thermal conductivity of backward step ethanol fueled micro-combustor by Vinay Sankar, Ratna Kishore Velamati, Sudipto Mukhopadhyay

    Published 2025-02-01
    “…The combustors were made of quartz, stainless steel, and aluminium, each with a thermal conductivity that differed by order of magnitude. …”
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    Article
  4. 84
  5. 85

    Fluid Inclusion and Oxygen Isotope Constraints on the Origin and Hydrothermal Evolution of the Haisugou Porphyry Mo Deposit in the Northern Xilamulun District, NE China by Qihai Shu, Yong Lai

    Published 2017-01-01
    “…The positive correlations between the homogenization temperatures and the salinities of the fluids and the low oxygen isotopic compositions (δ18Ofluid < 3‰) of the syn- to postmineralization quartz together suggest the mixing of magmatic fluids with meteoric water, which dominated the whole mineralization process. …”
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    Article
  6. 86

    TiO2 thin film synthesis from complex precursors by CVD, its physical and photocatalytic properties by V. G. Besserguenev, R. J.F. Pereira, M. C. Mateus, I. V. Khmelinskii, R. C. Nicula, E. Burkel

    Published 2003-01-01
    “…Photocatalytic TiO2 films on glass and quartz plates were obtained by the chemical vapour deposition using Ti(dpm)2(Opri)2 complex compound (CC-CVD method) in a standard vacuum apparatus at 1.2–2.0 × 10-4 mbar. …”
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  7. 87

    Dynamic Metasomatism: Stable Isotopes, Fluid Evolution, and Deformation of Albitite and Scapolite Metagabbro (Bamble Lithotectonic Domain, South Norway) by Ane K. Engvik, Heinrich Taubald, Arne Solli, Tor Grenne, Håkon Austrheim

    Published 2018-01-01
    “…New stable isotopic data from mineral separates of albite, scapolite, amphibole, quartz, and calcite of metasomatic rocks (Bamble lithotectonic domain) give increased knowledge on fluid type, source, and evolution during metamorphism. …”
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  8. 88

    Genesis of the Bairendaba Ag-Zn-Pb Deposit, Southern Great Xing’an Range, NE China: A Fluid Inclusion and Stable Isotope Study by Shunda Li, Keyong Wang, Yicun Wang, Xuebing Zhang, Hongyan Quan

    Published 2017-01-01
    “…Vein and disseminated ores occur in biotite-plagioclase gneiss and quartz diorite along regional EW trending faults. …”
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  9. 89

    Source apportionment of the sediments entering dam using lithological and mineralogical studies by S. Afshar, B. Saghafian, H.R. Vosoughifar

    Published 2016-05-01
    “…The results showed that most sediment samples in Taleghan are of sedimentary sandstone, mainly containing the quartz and plagioclase minerals (quartz sandstone and arkose sandstone). …”
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  10. 90
  11. 91

    MATHEMATICAL MODELING OF THE PROCESS OF SYNTHETIC SILUMINS PRODUCTION USING THE METHOD OF REGRESSION ANALYSIS by I. V. Rafalskij, A. V. Arabej

    Published 2012-02-01
    “…The basic mechanisms of the process of silicon restoration from alumina-matrix composite ligatures on the basis of quartz sand are established. The mathematical models, describing influence of temperature, an alloy preparation time and quantities of silica in alumina-matrix composite ligatures on silicon output in synthetic alloy, are presented.…”
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  12. 92

    Numerical Simulation Study of Pore-Throat Evolution of Upper Paleozoic in Ordos Basin, China by Qing Cao, Zhangxing Chen, JingZhou Zhao, Jiacheng Dang, Jiaxuan Song, Bin Chen

    Published 2021-01-01
    “…Differentiation results in the evolution of porosity and a pore-throat system of sandstone types have clear characteristics, such as lithic quartz sandstones of the He 8 Member in the Sulige area and quartz sandstones of the Shan 2 Member in the Yulin area. …”
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  13. 93

    Evaluation of the Accumulation Conditions and Favorable Areas of Shale Gas in the Upper Palaeozoic Marine-Continental Transitional Facies in the Daning-Jixian Area, Ordos Basin by Xu Zeng, Wei Wang, Qian Cao, Shangwen Zhou, Guodong Dong, Aiming Wang, Zhixin Chen, Hua Mei

    Published 2022-01-01
    “…In addition, the content of brittle minerals such as quartz is higher, and Poisson’s ratio is lower, facilitating the subsequent transformation. …”
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    Article
  14. 94

    Reservoir Physical Properties and Micropore Nanocharacteristics of Cores in the Shihezi Formation, Sudong District, Sulige Gas Field, Ordos Basin by Xin Zhang, Feng Wang, Shuyi Liang, Qintao Guo, Jingchun Tian, Bingyue Shen

    Published 2022-01-01
    “…According to core observation, thin section identification, and grain size analysis, the lithology of gas reservoirs in Shan-1 member and He-8 member in the study area is mainly lithic sandstone, lithic quartz sandstone, and quartz sandstone. According to the analysis of physical data in the study area, the reservoirs in Shan-1 member and He-8 member have typical characteristics of low porosity and low permeability. …”
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  15. 95

    Thermodynamic properties of the liquid Hg-Tl alloys determined from vapour pressure measurements by Gierlotka W., Fitzner K., Sukiennik M.

    Published 2002-01-01
    “…The partial vapour pressure of mercury over liquid Hg-Tl liquid solutions were determined in the temperature range from 450 to 700 K by direct vapour pressure measurements carried out with the quartz gauge. From the measured ln pHg vs. T relationships activities of mercury were determined. …”
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  16. 96

    Pore Structure Differentiation between Deltaic and Epicontinental Tight Sandstones of the Upper Paleozoic in the Eastern Linxing Area, Ordos Basin, China by Jimei Deng, Huan Zeng, Peng Wu, Jia Du, Jixian Gao, Fei Zhao, Zhixun Jiang

    Published 2021-01-01
    “…The results show that the deltaic tight sandstones in the Shanxi Formation are dominated by lithic quartz sandstone and lithic sandstone with an average porosity of 2.3% and permeability of 0.083 mD. …”
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    Article
  17. 97

    Genetic Types and Main Control Factors of Microfractures in Tight Oil Reservoirs of Jimsar Sag by Xiangye Kong, Jianhui Zeng, Xianfeng Tan, Haowei Yuan, Dan Liu, Qun Luo, Qianyou Wang, Rusi Zuo

    Published 2021-01-01
    “…Tight reservoirs containing more quartz and carbonate minerals were found to develop more microfractures. …”
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    Article
  18. 98

    Gasoline Direct Injection Engine Emissions of OC and EC: Laboratory Comparisons with Port Fuel Injection Engine by Jie Zhang, John Liggio, Tak W. Chan, Lin Huang, Jeffrey R. Brook

    Published 2022-05-01
    “…By considering OC collected on a quartz filter behind a Teflon filter, the emissions from PFI vehicle were found to be more volatile than the GDI vehicle. …”
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  19. 99

    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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  20. 100

    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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