Lü Wen-Chao, Yang Zhi-Jun, Zhou Yong-Zhang, Li Hong-Zhong, Zeng Xiang-Qing, Chen Qing, Liang Jin, Zeng Chang-Yu
Department of Geoscience, Sun Yat-sen University, Guangzhou 510275, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 May;33(5):1374-8.
The XRD, FTIR and Raman spectrum were employed to study the characters of quartz from three types of rock samples, which are mineralized rock sample, near ore body rock sample and far away from ore body rock sample in Heliao lead-zinc polymetallic ore district. The research shows that the quartz in the mineralized rock and far away from ore body rock is pure, while the quartz in near ore body rock contains a small amount of impurities. But such small amounts of impurities did not cause apparent change in the quartz lattice parameters. From far away from ore body rock-->near ore body rock-->mineralized rock, the crystallinity and order degree of quartz are higher and higher. And the quartz in the mineralized rock has a trend to change into low symmetry quartz. It's a unique to mineralized rock that the quartz's absorption peak at 1 050 cm(-1) was split into two strongest ones. It can be used as the signs of whether exists mineralization. The cause for the quartz microstructure changes may be related to the activities of late mineralized hydrothermal fluids. Late hydrothermal influence was very weak to the quartz far away from ore body rock. And through the impact of the multi-stage hydrothermal effect, the quartz in mineralized rock may be purified by recrystallization and structural adjustment. However the quartz in near ore body rock didn't have enough hydrothermal influence, so it's not pure. Genealogy research technology is a useful technique for in-depth exploration of study area mineralization process and metallogenic regularity.
利用XRD、FTIR和拉曼光谱研究了河辽铅锌多金属矿区三种岩石样品中的石英特征，这三种岩石样品分别为矿化岩石样品、矿体附近岩石样品和远离矿体岩石样品。研究表明，矿化岩石和远离矿体岩石中的石英是纯净的，而矿体附近岩石中的石英含有少量杂质。但如此少量的杂质并未导致石英晶格参数发生明显变化。从远离矿体岩石→矿体附近岩石→矿化岩石，石英的结晶度和有序度越来越高。且矿化岩石中的石英有向低对称石英转变的趋势。矿化岩石中石英在1050cm-1处的吸收峰分裂为两个最强峰，这是矿化岩石所特有的，可作为是否存在矿化的标志。石英微观结构变化的原因可能与晚期矿化热液流体的活动有关。晚期热液对远离矿体岩石中的石英影响很弱。并且通过多阶段热液作用的影响，矿化岩石中的石英可能通过重结晶和结构调整而得到净化。然而，矿体附近岩石中的石英没有受到足够的热液影响，所以不纯净。谱系研究技术是深入探索研究区矿化过程和成矿规律的一种有用技术。
