Petrological Discrimination Between Primary and Secondary Muscovites and Its Geological Implications: A Case Study of Fucheng Peraluminous Granite Pluton in Southern Jiangxi Province

• 责任者：Zhang Bangtong (State Key Laboratory for Mineral Deposits Research ; School of Earth Sciences ; Nanjing University ; Nanjing 210093 ; China) ; Wu Junqi
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2010
• 卷期：29(3)
• 关键词：白云母 ; muscovite ; 花岗岩 ; granite ; 江西 ; Jiangxi Province
• 页码：p.225-234
• 图表：7 illus., 2 tables, 20 refs.
• 分类号：0700
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

The Fucheng composite pluton is exposed in an area of about 850 km² and intruded into Sinian-Cambrian strata with a distinctive thermometamorphic aureole of hornstone. Based on microscopic observation and electron microprobe analyses, the authors recognized three kinds of muscovites, namely primary, metasomatic and secondary muscovites, in the Fucheng strongly peraluminous granite pluton, and their average crystallochemical formulas are respectively. A synthetic method for the discrimination between primary and secondary muscovites based on macroscopic petrological and petrochemical characteristics as well as micro-petrographic features is suggested in this paper.