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

含钠长石硅质、千、组合是找矿评的重要标志。

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

下石门桥组硅质是粤西长坑金银矿床的直接容矿石。