The uranium deposit of Silurian age in a certain area is controlled mainly by fracture and morphologically changing parts of uranium bearing siliceous limestone and chert beds.
某地区志留系中的铀矿床，主要受硅灰岩和硅岩含矿层形态变异部位和断裂构造控制。
2
The Qimagou Pb-Zn deposit occurs between onyx siliceous marble and volcanic tuff of the Xiong 'er Group.
骑马沟铅锌矿赋存于熊耳群条纹状硅质大理岩与火山凝灰岩之间。
3
This type deposit is formed in the formation of B-rich and C-rich phyllite with quartzite (siliceous rocks) as intercalated beds, which belongs to early Proterozoic Laoling group;