Accessory Minerals of Lisong Granite and Mafic Microgranular Enclaves in the Guposhan Area as Indicators of Magma Mixing
详细信息
- 责任者：Wang Lubin (State Key Laboratory for Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Wang Rucheng
- 刊名：Geological Journal of China Universities
- 出版年：2011
- 卷期：17(3)
- 关键词：侵入体 ; intrusions ; 副矿物 ; accessory minerals ; 广西 ; Guangxi Province
- 页码：p.423-435
- 图表：8 illus., 4 tables, 21 refs.
- 分类号：0801
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
In order to study the mineralogical evidence of magma mixing and the relationship between basic magma and tin-mineralization, the authors studied and compared the compositions of accessory minerals in the granite and MME by using electron microprobe. The authors firstly confirmed the appearance of subhedral cassiterite of magmatic origin in cleavages of mafic minerals in MME. The authors also found that the zircon and titanite in MME show rapid crystallization evidence after the basic magma emplacement. Particularly, consistent with the tin enrichment during the granite evolution, the late-stage titanite from the granite has higher tin contents than the early-stage one.