An introduction to the Institute of Geochemistry, Chinese Academyof Sciences 97
The confirmation of a new type of chondrites and theircosmochemical significance Hou Wei 100
Palaeoenvironmental changes of the ancient Nihewan Lake area --- Srisotope evidence from Xiaodukou Foraminifera Wang Shijie 105
Silicalites of hydrothermal origin in the Lower Cambrian black rockseries of South China Li Shengrong and Gao Zhenmin 113
Characteristics of corona textures in the Huangtuling granulite inthe Dabie complex, China and their implications for tectonicsettings Wang Jianghai et al. 121
Interdiffusion of Na, K and Ca between granitic melts and NaClliquid Bai Tianbao and A.F. Koster van Groos 129
Rare-earth elements and genesis of lamprophyres in the Laowangzhaigold orefield, Yunnan Province Huang Zhilong et al. 138
Element geochemical characteristics of the Cretaceous dinosaureggshell fossils and their implications for palaeoenvironment YangWeidong et al. 147
High pressure--differential thermal analysis and ultrasonic waveamplitude analysis of ice--water equilibrium at 1.5--5.0 GPa XuYousheng et al. 153
Dehydration temperature of serpentine at elevated temperatures andpressures by electrical conductivity method and its implications SongMaoshuang et al. 159
Genetic analogy between sediment-hosted gold deposits andsediment-hosted copper deposits in Southwest China Xiao Rongge etal. 164
Geochemistry of the Jinman vein-type copper deposit, western YunnanProvince, China --- I. Element geochemical characteristics Ji Hongbingand Li Chaoyang 172
Mechanism of seasonal deterioration of water quality in LakeBaihua, China Bai Zhanguo et al. 185
Physicochemical conditions of differential mineralization of Au andAs in gold deposits, Southwest Guizhou Province, China HeMingyou 189
