江西白果地区岩浆岩与稀有金属成矿的关系

Relationship between magmatic rocks and rare metal mineralization in the ginkgo area, Jiangxi

白果地区主要为江西奉新县甘坊镇至上富镇一带。区内岩浆活动强烈,特别是燕山期岩浆活动具有多期次多阶段侵入的特点,岩体规模小,演化程度大,钠长石化、白云母化强烈,与锂铷等稀有金属成矿密切相关。锂、铷的载体矿物为白云母(含钠云母和绢云母)和长石(包括斜长石和钾长石),铷主要以类质同象的形式分布在白云母和长石中,白云母中分布率相对较高,少量以机械混入的形式分布于石英及其它矿物中。

Ginkgo area is Gan Fang Zhen first town area of Jiangxi County of Fengxin. Magmatic activity is intense in the area, especially Yanshan magmatic activity has the characteristics of multistage intrusive rock, small scale, high degree of evolution, albitization, muscovitization strong, closely related with lithium rubidium and rare metal mineralization. The carrier minerals Muscovite lithium, rubidium（sodium feldspar and mica and mica）（including plagioclase and K-feldspar）, rubidium mainly in the form of isomorphism distribution in Muscovite and feldspar, muscovite relatively high distribution rate, small amount of mechanical mixing in the form of distribution in quartz and other minerals.