GEOCHEMICAL CHARACTERISTICS OF THE WENQUAN PORPHYRY MOLYBDENUM DEPOSIT IN WEST QINLING AREA
HAN Hai-tao1,2, LIU Ji-shun1, DONG Xin1,3, Zhou Yu-guo1, WANG Guo-ren2, SHI Jian-jun2
1. School of Geoscience and Environmental Engineering Central South University, Changsha 410083, China;
2. Tianshui General Party of Gansu Nonferrous Metals Geological Exploration Bureau, Tianshui 741025, China;
3. Gansu Institute of Geological Survey for Nonferrous Metals, Lanzhou 730000, China
The Wenquan porphyry molybdenum deposit in West Qinling area occurs in Indosinian complexes, with the wall rocks being K-rich calc-alkaline rocks. CIPW calculation shows that they are of the normal type, and in Q-A-P diagram they are all plotted in the adamellite region. Trace element analyses show that Mo, Cu, Ag, As and Bi were closely related to mineralization, and REE geochemical studies reveal that the rocks are characterized by enrichment of LREE, good fractionation and strong Eu depletion. It is thus concluded that the rocks were products of crsut-mantle magmatic mixture and provided ore-forming materials.
韩海涛, 刘继顺, 董新, 周余国, 王国仁, 史建军. 西秦岭温泉斑岩型钼矿花岗岩类地球化学特征[J]. 物探与化探, 2008, 32(2): 139-142,153.
HAN Hai-tao, LIU Ji-shun, DONG Xin, Zhou Yu-guo, WANG Guo-ren, SHI Jian-jun. GEOCHEMICAL CHARACTERISTICS OF THE WENQUAN PORPHYRY MOLYBDENUM DEPOSIT IN WEST QINLING AREA. Geophysical and Geochemical Exploration, 2008, 32(2): 139-142,153.