Bulletin of the Geological Society of Malaysia, Volume 19, April 1986, pp. 249 – 259

The rare earth elements geochemistry of Lingshan tungsten-tin-bearing granites and their applications to petrogenesis of the granites

YUAN ZHONGXING, BAI GE and LI SHUANGBAO

Institute of Mineral Deposits, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, Beijing, People‘s Republic of China

Abstract: The Lingshan granite complex mainly consists of 4 rock types: (1) coarse porphyritic hornblende-biotite granite (140 Ma); (2) medium-coarse grained biotite granite (127 Ma); (3) medium-fine grained albitized zinnwaldite-bearing granite (100-126 Ma); (4) granite porphyry. In this paper, the petrological characteristics, petrochemical composition and rare earth elements (REE) contents of the various rock types and the REE contents of 5 rock-forming minerals are given. With the aid of petrochemical compositions and REE data the authors have discussed the genesis of the granites. It is postulated that a melt of the granite complex had been derived from Proterozoic phyllite-tuffite by partial melting and that crystal differentiation might have played an important role in the formation of Granite 2 and Granite 3.

https://doi.org/10.7186/bgsm19198619