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was placed at the center of the tube furnace, and the NaH2PO2·H2O (0.5 g) was placed on the upstream position. Then, the quartz tube was heated to 300 °C for 2 h under Ar atmosphere. After cooling naturally......
the major minerals in the rock are quartz (59.64%), albite (31.96%), microcline (4.52%), clinochlore (2.25%) and clay minerals (1.63%, illite dominant). The basic physical and mechanical parameters......
showed that the sandstone is consisted mainly of quartz and albite with no obvious "defects", and the average grain size is approximately 1.0 mm. The sandstone cylinders with 74 mm in diameter......
the peak settlement of 0.25B=25 mm. Figure 2 Illustration of foundation under loading 2.5 Materials 2.5.1 Soil A uniform and clean quartz beach sand is utilized for the tests, which is locally available......
quartz tubes during annealing. For the sake of convenience, the specimens were named after their annealing temperature and holding time. For example, the 800-90 specimen was annealed at 800 °C......
the presence of quartz and silicates as the main mineralogical components and chal copyrite as the minor phase. The X-ray fluorescence (XRF) and mineralogical analysis of the representative sample......
一致. 图2 龙头山矿区不同阶段黄铁矿产出特征及镜下特征(Q-石英；Py-黄铁矿；Tur-电气石；Ccp-黄铜矿；Sp-闪锌矿；Cv-铜蓝；Bmt-辉铋矿) Fig. 2 Occurrences and microphotographs of pyrite at different stages in Longtoushan deposit (Q-Quartz; Py...铁矿及其包裹体的稀土元素特征--以胶东焦家式金矿为例[J]. 岩石学报, 2003, 19(2): 267-274.LI Hou-min, SHEN Yuan-chao, MAO Jing-wen, LIU Tie-bing, ZHU He-ping. REE features of quartz and pyrite and their fluid inclusions: An example......
of residue is dominated by Fe (30%–50% Fe2O3) and its mineralogy often approximates to 10%–30% goethite, 10%–30% hematite, 2%–20% calcite, 0–5% gibbsite, 2%–15% anatase, 3%–10% quartz and 5%–20% sodalite......
was arranged as a continuous process at 920 °C for 2 h. Firstly, the specimens were put into the quartz retort. Prior to heating, air was removed from the whole system by the vacuum pump. Due......
particle size analyzer. The grading curves are presented in Figure 1. As reported [27], the clay-sized particles in the DYG deposit contain quartz (40 wt%), mica (30 wt%), plagioclase (15 wt......
