Abstract:Forsayth mining area locates in gold-concentrated area in Ropewalk group in southeastern part of "Daqiao " metallogenic belt with the trend of SE—NW in Queenland state in Australia. Ore-bearing structures in the work area is near EW trend. Gold deposit belongs to medium temperature magmatic hydrothermal polymetallic sulfide quartz vein type. Surface oxidation belt is composed of ores under the buried depth less than 50m. They are oxidized ores. Ores under the buried depth of 50m are primary ores. Comparing the results gained by using geological block method and SD method with the calculation of natural resources gained by Australian geological experts, the total amount of gold metals in mining area was 25t. Through geological prospecting, combining with geological background and geological characteristics of the deposit, the origin of deposit and prospecting marks have been summarized, and prospecting potentiality in the deep part in this area has been pointed out.