GEOLOGICAL CHARACTERISTICS AND PROSPECTING INDICATORS OF THE ANCHANGXIAN MOLYBDENUM DEPOSIT IN HULUDAO CITY, LIAONING PROVINCE

The Anchangxian molybdenum deposit is with concealed ore bodies roughly parallel distributed in skarn as stratoid and lenticular forms. The metal minerals in the ore include mainly molybdenite, followed by pyrite, magnetite, chalcopyrite, galena and sphalerite. The nonmetallic minerals are dominated by garnet, diopside, idocrase, tremolite, actinolite and quartz. The main wall rock alterations involve skarnization, silicification, chloritization, epidotization and actinolitization. Among those the skarnization is the major alteration related to mineralization. The granite of Jurassic Gangtun super unit is the main source for molybdenum ore. The Anchangxian molybdenum deposit belongs to skarn type.