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Fluid Inclusions and H-O-C-S Isotopes of the Wushan Copper Polymetallic Deposit in the Suizao Area, Hubei Province: Implications for Ore Genesis
Published 2019-01-01“…The mineralization of Wushan copper polymetallic deposit is mainly composed of ore-bearing quartz veins and quartz stockworks. Two hydrothermal stages are identified as the quartz-sulfide stage (early stage) and the barren quartz stage (late stage). …”
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62
Mineralogical Characteristics of Phosphate Tailings for Comprehensive Utilization
Published 2021-01-01“…The main gangue minerals are quartz, dolomite, calcite, a small amount of potassium feldspar, plagioclase, chlorite, etc. …”
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63
Fluid Inclusions and C-H-O-S-Pb Isotope Systematics of the Changfagou Deposit, Jilin Province, Northeast China
Published 2018-01-01“…According to the mineral paragenetic association and its various relationships, the hydrothermal mineralization can be divided into 4 metallogenic stages from early to late: stage I is K-feldspar-quartz-magnetite, stage II is quartz-molybdenite, stage III is quartz-chalcopyrite (polymetallic sulfide), and stage IV is carbonate. …”
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64
Micro-characterization of Dust and Materials of Dust Origin at a Cement Industry Located in Bangladesh
Published 2022-10-01“…For instance, quartz was found in the dust of dust collectors while road dust of the CI showed the existence of both quartz and cristobalite. …”
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DISTRIBUTION OF TRACE ELEMENTS IN GROWTH ZONES AND SECTORS OF SPODUMENE CRYSTALS (PASHKI DEPOSIT, NURISTAN, AFGHANISTAN)
Published 2024-06-01“…We studied an early generation spodumene crystal from blocky spodumene-quartz-albite pegmatite and two late generation spodumene crystals including an euhedral crystal from a quartz core of pegmatite and a crystal extracted from a mineralized cavity together with quartz crystal, albite, and muscovite. …”
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67
Alteration, mineralization, geochemistry and fluid inclusion investigations in Joftrud prospect area, southwest of Birjand
Published 2024-12-01“…These LV inclusions show salinities between 11.1–13.4 wt.% NaCl equivalent in quartz of stage1 and 15.9–19 wt.% NaCl equivalent in quartz of satage-2. …”
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68
Optimal Proportion of Similar Materials and Rockburst Tendency of White Sandstone
Published 2021-01-01“…To explore the tendency of rockburst, a similar material ratio was optimised based on white sandstone. Quartz sand, iron powder, gypsum, cement, retarder, and a water-reducing agent were used as the main materials. …”
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69
Quantitative characterization of the multiscale mechanical properties of low-permeability sandstone roofs of coal seams based on nanoindentation and triaxial tests and its implicat...
Published 2025-01-01“…Compared to polycrystalline quartz, monocrystalline quartz has a more stable microstructure and is mechanically stronger. …”
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70
MINERAL COMPOSITION OF HEAVY CONCENTRATES OF THE KAMENNAYA SANARKA GOLD PLACER (SOUTH URALS)
Published 2021-06-01“…On the basis of morphological and chemical features, native gold could probably be sourced from gold-(sulfide)-quartz veins in schists and gneisses, which compose the bedrock, as well as from quartz veins of the Kamennaya Sanarka granite pluton.…”
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71
Fluid Inclusion and H–O–S–Pb Isotope Geochemistry of the Yuka Orogenic Gold Deposit, Northern Qaidam, China
Published 2019-01-01“…The Yuka mineralization can be divided into three stages: early quartz-pyrite (stage-I), middle quartz-gold-polymetallic sulfide (stage-II), and late quartz-carbonate (stage-III). …”
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72
Whole-rock geochemistry and crystal chemistry of apatite at intrusive suites of the Qeynarjeh-Angouran district (west of Zanjan): an approach to the identification of skarn-causati...
Published 2024-10-01“…In this area, intrusive suites of Middle Triassic-Upper Jurassic age are exposed, including the Gharavol-Khane quartz diorite, the Kuh-e Belghais granite porphyry, and the Qeynarjeh granodiorites. …”
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73
Damage Simulation of a Random Aggregate Model Induced by Microwave under Different Discontinuous Ratios and Exposure Times
Published 2016-01-01“…A random aggregate algorithmic method and a numerical model for two-phase materials (composed of quartz and plagioclase) with different discontinuous ratios and irradiation times were studied based on the discrete element method using two-dimensional particle flow code (PFC2D). …”
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74
Study on the Adsorption Mechanism of Hydrophobic SiO2 Nanoparticles: A Molecular Dynamics Study
Published 2025-01-01“…The simulation results show that water molecules could form two adsorption layers on both quartz and kaolinite surfaces. Hydration layer thickness of kaolinite is greater than that of the quartz surface. …”
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MINERALOGY AND ORE FORMATION CONDITIONS OF THE NAILY GOLD DEPOSIT (SOUTH URALS)
Published 2024-12-01“…The paper examines mineralogy of noble metals and ore formation conditions at the Naily gold deposit (South Urals), which is hosted in pyrite-bearing talc-carbonate, chlorite-quartz-carbonate and quartz-carbonate metasomatites after serpentinites and rocks of a gabbrodiorite-plagiogranite complex. …”
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76
Crystal structure modulating performances for 213-nm GeO2 solar-blind photodetectors via DC reactive magnetron sputtering method
Published 2025-02-01“…Here, we have fabricated quartz and rutile-GeO2 thin films utilizing the magnetron sputtering based synthetic strategy, which exhibit ultra-wide bandgap energies of 5.51 and 5.88 eV. …”
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77
Effective Stress Factor Analysis of Proppant for Multi-stage Fracturing in Horizontal Wells
Published 2022-01-01“…Based on the above conclusions, the field test of replacing ceramsite proppant with quartz sand was carried out. The proportion of quartz sand increased from less than 30% in 2014 to 69% in 2019. …”
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Geology, Fluid Inclusion, and H–O–S–Pb Isotope Constraints on the Mineralization of the Xiejiagou Gold Deposit in the Jiaodong Peninsula
Published 2019-01-01“…Three stages of mineralization were identified with the early stage being represented by (K-feldspar) sericite quartz pyrite, the middle stage by quartz gold polymetallic sulfide, and the late stage by quartz carbonate. …”
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Quantification of the Transparency of the Transparent Soil in Geotechnical Modeling
Published 2018-01-01“…Specifically, transparent soil with fused quartz serves as the soil sample for the detection of transmittance, and transmittance’s impact on imaging quality in geotechnical modeling with transparent soil is investigated through an evaluation function of image clarity. …”
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Study on the Proportion of Conglomerate Similar Materials Based on the Orthogonal Test
Published 2021-01-01“…The three control factors are cement-to-water ratio, cement-to-sand ratio, and quartz sand particle size, and orthogonal tests are set at four levels. …”
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