The lamprophyres are widely distributed in Qinling, which are mostly well auriferous.The lamprophyres are occurred in silty slates of Palaezoic Silurian and Devonian systems.

• 秦岭地区广泛分布有煌斑岩，其主要赋存于古生界志留系与泥盆系的粉砂质板岩中，大部分含金较高。