| Wangwan molybdenum deposit is a typical porphyry molybdenum deposit in the eastern Qinling orogenic belt.Based on the comprehensive study of Wangwan molybdenum deposit and the comparative analysis with Qianyechong molybdenum deposit in the adjacent area,the metallogenic epoch,source and process of the deposit are discussed,and the following understandings and achievements are obtained:?1?The wall rock alteration types of Wangwan molybdenum orebody include silicification,potassium feldspar,sericitization and pyritization.Among them,the main wall rock alteration combination of molybdenum mineralization is silicification-sericitization?epidote?-pyritization,and the main wall rock alteration combination of lead-zinc mineralization is silicification-carbonatization?chloritization?-pyritization.Change.?2?The main metallogenic minerals in Wangwan molybdenum ore body are magnetite,rutile,hematite,pyrite I,molybdenite,pyrite II,chalcopyrite,sphalerite,porphyry,pyrrhotite,galena and jamesonite.The main metallogenic stages are quartz-molybdenite and quartz-calcite-galena lead.Sulfide stage.?3?The ore types of Wangwan molybdenum deposit can be divided into granite porphyry type ore and altered schist type ore.Among them,the content of SiO2?Al2O3?K2O?Na2O of granite porphyry type ore is obviously higher,the content of CaO and MgO is lower,and the content of CaO and MgO of altered schist type ore is higher.?4?The Wangwan molybdenum deposit mainly occurs in the interior of granite body and near the contact zone with surrounding rock.The main alteration type is disseminated alteration,and its genetic type is porphyry molybdenum deposit. |
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