WANG Xin-tao1, CHEN Yong1*, ZHOU Yao-qi1, WANG Miao1, CHEN Xiao-lan2
(1. School of Geosciences, China University of Petroleum, Qingdao 266580, China;
2. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)
Abstract: Making high-quality thin section of fluid inclusions in rock salt is a key and premise to study geochemical characteristics of fluids related to rock salt. However, among the existed methods for making thin section of fluid inclusions in rock salt, using saturated KCl solution or oil with high heat conductivity as grinding fluid and polishing solution in the process of making thin section can contaminate rock salt samples. Meanwhile, the method getting cleavage chips of rock salt with blade also has drawbacks, including the smaller size and frangibility of cleavage chips of rock salt, and may lead to disadvantage influence on the complete observation for petrographic characteristics of fluid inclusions in rock salt under the microscope. Based on the shortcomings of above thin section-preparing methods, this paper proposes a new making method on thin section of fluid inclusions in rock salt, that was using anhydrous ethanol as fluid medium throughout the whole process of thin section preparation, including the cooling liquid for cutting blade, grinding fluid, wetting agent for polishing power (polishing solution) and cleaning liquid used to clean rock salt samples by ultrasonic cleaner, which were all in anhydrous ethanol. The thin section of fluid inclusions in rock salt made by this method can effectively overcome the shortcomings existed in the process of current making method, avoid contaminating rock salt samples (including dissolution and deformation of rock salt samples, fluorescence interference caused by oil, etc) to achieve the goal that preserve and perfectly represent the original geological information existed in rock salt.
Keywords: rock salt; anhydrous ethanol; fluid inclusion thin section; thin section-preparing method
E-mail：yongchenzy@upc.edu.cn
ACTA MINERALOGICA SINICA Vol. 36, No. 3, 2016, Page 397-403
