Lithology-fault Ore-controlling Characteristics Of 2108m And 2073m Level And Prospecting Prediction In Yaoan Lead Deposit, Yunnan Province

Yao’an lead deposit is closely related to the alkali rich porphyry and tectonic activity, carry out the large scale geological map of 2108m and 2073m level in the deep deposit, establish Lithology-fault geologic section of typical transverse drift, analyze Lithology-fault ore-controlling character, summarizes the mineralization regularity, put forward deep prospecting prediction area. Research suggests that: ① Iead mineralization mainly distributed in the NE fault and intersection of faults in different directions, lead mineralization in the hanging wall of NE dikes is enriched, lead mineralization in cryptoexplosive breccia mainly development in breccia edge; ② Early NNW anticline and NW torsion-transtecsional fault(F3、 F4) limit the space of Pb-Ag deposit, NE tension space formed by later NE-SW primary stress provide rise channel to volcanic eruption and ore liquid rise, it’s the main ore forming structure; ③ The spatial location and occurrence of syenite porphyry dikes and faults are the same, temporal and spatial relations as will as genetic association of structure, dike and mineralization are close contact; ④ Four deep prospecting prediction were put forward by summarizing the lithology-fault ore-controlling character and lead mineralization rule.