Deep prognosis for goaf of mining area of Jiuqu in Linglong area, Shandong Province, China

Taking use of pre-existing production materials about alteration mineralization, the relationship of tectonic-alteration zoning between quartz vein type gold deposit and altered rock type gold deposit is built, and the regularity of mineralization and alteration zoning is established. Mineralization alteration legends which could be observed in the field are formed as well. Through tectonic altered rock mapping, prospecting indicators are enlarged from mineralization demonstration to altered rock, even to the weak potassic altered granite, which makes prospecting prognosis target expanded by several times or even scores of times . Expanding exploration target are proved at Jiuqu regions. Prediction in goaf of Jiuqu area was tested by tectonic altered lithofacies geological survey and deep prospecting method.