摘要
通过花岗岩-HF-H2O体系的熔化-结晶实验,在570～700℃、100MPa条件下获得了与淬火玻璃共存的石英+碱性长石+云母+萤石的矿物组合。电子探针分析结果表明,实验产物中除黑云母外,还有一部分为铁白云母和锂白云母,这说明浅色云母可以形成于岩浆条件,同时为自然界中存在岩浆成因锂白云母花岗岩和二云母花岗岩提供了新的实验证据。
A mineral assemblage of quartz +alkali feldspar +mica +fluorite, coexisting with melt phase, is obtained in the melting crystallization experiments above solidus in the F rich granite HF H2O system at 570～700℃and 100 MPa. Analytical results by electron microprobe indicate that parts of mica in the run products are Fe muscovite and Li muscovite, besides biotite. The results suggest that Fe and Li muscovite can be formed under magmatic condition, which provides a new evidence for magmatic genesis of Li muscovite granite and two mica granite.
出处
《地球化学》
CAS
CSCD
北大核心
2003年第1期75-80,共6页
Geochimica
基金
国家自然科学基金(49873017)
高校博士点基金(1999028420)
南京大学内生金属成矿机制研究国家重点实验室开放课题(059925)
