The Da'ao greisen-type W-Sn deposit is located in the Jiuyishan multiple granitic body.

大坳云英变体型钨锡矿产于九嶷山复式岗杂体中。

Although there are 60 tin-bearing greisen veins,only a few of them form the main ore bodies.

共圈出含锡云英60,但主矿体却只有少数几。