The contact zones of chromium-bearing rock body and the characteristics of metamorphism of the xenoliths of country rocks in Tadaurge,Kansu,and the preliminary simulated experiments Cao Ronglong A preliminary experimental study of the conditions for K-feldspathization of the porphyry copper(molybdenum)deposits in Fujiawu,Jiangxi Zeng Jiliang et al. An experimental study of migration form of iron element in high-temperature pneumato-hydrothermal solution Wang Yurong et al. Experiments of alteration of plagioclase——the conditions of formation of the pyroxene-anhydrite-magnetite assemblage Han Fa et al. A preliminary study on experiments of alteration of the Huangmaching-Formation country rocks related to porphyrite Iron deposits in the Southern of Nanjing-Wuhu district Cai Yuanji,Cai Ren'an Report of the genetic conditions of Shilu Iron deposits and the simulated experiments for the hydrothermal alteration of ores and country rocks Cao Ronglong et al. A simulated experiment of sodium metasomatism during the formation of Uranium deposits. Ni Baoju,Zhang Xuezhi Experiments for the conditions of alkalic alteration of microcline Li Zaolin et al. Some experimental studies on the conditions of formation of chambersite in the manganese-boron deposits in Ji Xian,Hebei Group of experimental study of the Genesis of Rocks and Minerals,Office of Teaching and Research of Geochemistry,Department of Geology Beijing University A discussion of formation of natural quartz deposits based on experimental data of artificial quartz Zhong Weizhuo,Hua Sukun A preliminary discussion on leaching experiments for the Precambrian Iron-bearing quartzites in Eastern Hebei Group of Experimental Study of the Genesis of Rocks and Minerals,Office of Teaching and Research of Geochemistry,Department of Geology Beijing University A discussion on silica-removing conditions during the formation of enriched Iron deposits in the crust of weathering of Precambrian riband magnetite-quartzite Cheng Fu,Yu Yunmei Experimental study of weathering and leaching for some ore type in the Precambrian Iron-bearing quartzites of our country Wang Xianjiao et al. The chemical thermodynamic study of mineral assemblage and the nature of oreforming hydrothermal solution of an orefield in Guangxi Guo Qidi Abstracts A preliminary study of melting experiments of the Nanling granite Wang Liankui et al. Experiments of albitization of diorite-porphyrite Li Jiuling et al. Experimental study on the genesis of migmatitized granite and its relation with Iron deposits Zhao Bin et al. The geochemical significance and the experimental methods for the study of complexes under high temperatures and high pressures Wang Yurong et al. Experiments of dissolution of Iron from diorite-porphyrite into choride solutions Liu Yushan et al. A preliminary experimental study of the conditions for the formation of Iron deposits of contact-metasomatic type in Jinling,Shantung Office of Teaching and Research of Geochemistry,Department of Geology Nanjing University Phase change of pyrophyllite accelerated by water under superhigh pressures and high temperatures and its effect on application of the technique Li Daming et al.