The Multiple Factors and Multiple Stages Involved in SedimentaryOre Genesis* Ye Lianjun and Chen Qiying 193
Plate Tectonic Setting and Eruptive Characteristics of the K-richVolcanic Belt in Heilongjiang Province, Northeast China Qiu Jiaxiang etal. 220
The Sedimentation-reworking Genesis of Dongchuan-type StratiformCopper Deposits Hua Renmin 231
Lower Cambrian Black Rock Series and Associated Stratiform Deposits inSouthern China Chen Nansheng et al. 244
Geological Characteristics and REE Geochemistry of Sn-mineralizedGranitoids in the Mt. Hengduanshan Region --- A Preliminary study* XieYingwen and Zhang Yuquan 256
Metallogenesis of Devonian--Carboniferous Strata-boundCarbonate-type Uranium Deposits in South China Pang Yuhui 264
The Possible Topologic Structure Types of Orthopyroxene with SpaceGroup P21ca Luo Gufend et al. 275
X-ray Powder Diffraction Characterization of Pyrope Wang Guanxinand Gong Guohong 284