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specimen with a diameter of 50 mm and a height of 100 mm to obtain the basic physical parameters of the granite (Figure 1(b)) as follows: density of 2.64 g/cm3, longitudinal wave velocity of 5670 m/s,shear wave velocity of 3541 m/s, porosity of 0.45%, Poisson ratio of 0.27, average uniaxial compressive strength of 220.36 MPa, elastic modulus of 26.8 GPa, and tensile strength of 9.59 MPa......
基础上,进而深入研究银,铜,铅,锌等有价金属与氧化锰矿物的相关性. 1 矿区地质特征和样品采集 北衙金多金属矿床位于金沙江哀牢山富碱斑岩成矿带中段,金的储量达超大型矿床规模,并伴生铁,铜,银,铅,锌等金属矿种.矿体呈似层状-层状,局部透镜状.根据氧化程度及金属矿物组合可将矿石类型分为硫化矿石和氧化矿石,海拔1700 m之上主要发育氧化矿石,深部则以硫化矿石为主.在亚热带气候条件下,含丰...聚焦旋转阳极X射线衍射仪(MicroMax-007):工作条件为:束斑100 μm,步长1 (°)/s,总测量时间100 s. 矿物含量自动检测,纯矿物挑拣,XRD分析及矿物能谱分析均在广东省科学院资源综合利用研究所完成.MLA矿物自动分析系统联合FEI Quanta 650型扫描电镜,Bruker XFlash5010型能谱仪以及MLA软件3.1版本进行分析.工作条件为:加速电压20 kV,工作......
: 190-207. [32] CHENG Yao. The reservoir characteristics and reservoir formation mechanism of Qixia Formation’s Dolostone Reservoirs, Early Permian, Northwest of Sichuan Basin [D]. Chengdu: Southwest......