摘要
云南老王寨金矿区煌斑岩中呈斑晶和基质产出的云母以金云母为主，少量富镁黑云母，环带结构发育。矿物化学表明本区云母的寄主岩石属碱性岩系列，岩石类型为钙碱性煌斑岩；同时提供了煌斑岩源于交代富集地幔和受地壳物质混染程度低等成因信息。云母多种多样的环带结构暗示其寄主的煌斑岩具复杂的岩浆结晶演化过程。
Micas as phenocrysts and groundmass in lamprophyres of the Laowangzhai gold orefield,Yunnan Province are mainly phlogopites, with zoning texture of ten observed in them. Mineral chemistry of the micas show that their host rocks are alkalic series and calc-alkaline lamprophyres，and also provides genetic inform ation on the lamprophyres, i. e. ， they were derived from a metasomatic-rich mantle source with a low degree of crustal contamination. Various zoning textures of micas suggest that the process of magmatic crystallization of the lamprophyres is very complicated.
出处
《矿物学报》
CAS
CSCD
北大核心
1997年第1期63-70,共8页
Acta Mineralogica Sinica
基金
国家自然科学基金!49602026
北京中关村测试基金
关键词
煌斑岩
云母
矿物化学
金矿区
Laowangzhai gold orefield
lamprophyres
micas
mineral chemistry
Yunnan
