The association of albite-bearing silicolites, phyllite and limestone seems to be an important prospecting indicator.

含钠长石硅质岩、千枚岩、灰岩组合是标志。

The zimenqiao Formation silicolites of Lower Carboniferous is the country rock of Changkeng Au-Ag deposit.

下石炭统梓门桥组硅质岩是粤西长坑金银床直接容岩石。