Characteristics of Biotites and Their Petrogenesis Implication of Late Yanshanian Granites in Southwestern Fujian Province

• 责任者：Zhao Xilin (Nanjing Institute of Geology and Mineral Resources ; Nanjing 210016 ; China) ; Mao Jianren
• 刊名：Resources Survey & Environment
• 出版年：2010
• 卷期：31(1)
• 关键词：花岗岩 ; granite ; 黑云母 ; biotite ; 福建 ; Fujian Province
• 页码：p.12-18
• 图表：5 illus., 2 tables, 14 refs.
• 分类号：0801
• issnNo：ISSN1671-4814
• isbnNo：CN32-1640/N

Through the electron probe microanalysis of biotites from Caixi, Sifang and Luoboling plutons in southwestern Fujian Province, the paper discusses their geochemical characteristics and petrogenesis implication. The results indicate that the biotite in Caixi monzogranite can be classified into high-Fe type, and the biotite in Sifang and Luoboling granodiorites into high-Mg type. On the material source discrimination diagram, the compositions of biotites are plotted in the crust-mantle zone, implying that all of the plutons belong to the crust-mantle granitoids and that with the ages of the granitoids becoming younger more mantle constituents were mingled in their materials compositions during the formation of granitoids.