湘西沃溪金锑金属钨矿床中石英的矿物学研究

通过对矿床中不同世代及不同地质产状石英的颜色，形态，物理性质，化学成分，晶胞参数，结晶度的研究及Ｘ射线分析及红外光谱，电子顺磁共振谱等近代物理分析方法的测试，找出矿化石英与非矿化石英及不同类型矿化石英的标型特征，这些标型特征具有重要的找矿勘探意义。

Studies on Quartz from the Woxi Au-Sb-W Deposit,Western Hunan

Quartz is well spread in the deposit and can be divided into five minerogenetic periods. The color, grain size and crystal morphology of quartz can indicate the degree of mineralization.Quartz formed in different minerogenetic periods contains different chemical elements. The contents of Al, Cr, Li, Pb, As, Ca and Mg in quartz are positively related to mineralization. The cell parameters of quartz measured by X-ray powder diffraction are controlled by chemical compo- sitions, which have positive relationship with the content of Al in quartz. The crystallinities of quartz formed in the main mineralizing period are lower than those of quartz formed in nonmineralizing periods. The ratio of D1/D0in higher than 6. 00 and has CO2absorbing peaks in infrared spectroscopic diagrams of quartz, which can indicate mineralization. The electron paramagnetic resonance studies of quartz show that the higher the concentration of the O-(Al) center, the better the mineralization. The specific gravity of quartz decreases with the evolution of hydrothermal fluid.