STUDY ON ORE-CONTROLLING FACTORS AND ORIGIN OF THE No. 17 FLUORITE OREBODY IN JIAOKENGWU ORE BLOCK IN CHANGSHAN, ZHEJIANG PROVINCE

The Jiaokengwu fluorite ore block, located in the southeast of Bamianshan fluorite orefield in Zhejiang Province, is a new type of fluorite deposit discovered recently. The No.17 orebody is the main orebody, occurring in the contact with granite and the carbonate rock in the exocontact. Based on the study of geology and ore-controlling factors of the orebody, the characteristics of intrusion, wall rock and structures are discussed. It is concluded that the deposit was formed by the filling of post-magmatic hydrothermal fluid, accompanied by alteration. The prospecting indicators are put forward.