广西都庞岭花岗岩体基本特征

BASIC CHARACTERISTICS OF THE DUPANGLING GRANITE IN GUANGXI

都庞岭花岗岩体具正常花岗岩的演化特点,经历了加里东晚期、印支期和燕山早期,是一典型的多期复式岩基。燕山早期第三次岩浆脉动形成的细粒白云母花岗岩富含Sn、W,形成具有工业意义的花岗岩型锡矿床。

The formation of the Dupangling granite in the northeastern part of Guangxi Province experienced the Late Caledonian, Indosinian and Early Yanshanian stages. It occurs as a composite batholith. Its distribution is obviously controlled by folds and faults. From west to east it consists of three granite bodies of different ages, namely, γ_3~3, γ_5~1 and γ_5~2. The fine-grained muscovite gzanite formed by the third magmatic pulsation in the Early Yanshanian is rich in Sn and W, so shows promise in ore prospecting.