重视斑岩型铜-金矿床的找寻、勘探和评价

Ore-finding,prospecting and appraising of porphyry Cu-Au deposit

统计国外13个铜-金矿床的勘查策略和技术方法可知,这类矿床要运用多种手段综合勘查:磁法、激发极化法、电阻率测量等物探方法;水系沉积物,岩石碎屑,土壤地球化学测量;地质填图,钻探方法验证异常等。中国的15个铜成矿带,绝大多数具有斑岩型铜矿,具备斑岩型铜-金矿床的产出环境,但目前这类矿床具有一定规模的却很少。在勘查策略方面存在着对伴生金资源的严重浪费,综合手段不够系统,也不够灵活的问题。在找寻、勘探、评价的策略上除应加强研究力度外,还要克服"施工一个钻孔就要得到一定储量"的倾向。

The statistics of prospecting strategies and technical methods among 13 different porphyry Cu-Au deposits in overseas show that multi-exploration method such as magnetic haethod, induced polarization method, resistivity method, et al geophysical method and stream sediment survey, rock fragment, soil geochemical survey, geological mapping, drilling method, et al. are the favorable methods for this type deposit. The porphyry Cu deposit is ubiquitous among the 15 copper mineralization belts in China, and has favorable occurrence environments for porphyry Cu- Au deposit, but the porphyry Cu-Au deposit is rarely especially that of large scale. The severity waste of associated gold, no-system and no-flexible integrated methods exist in our prospecting strategy. The investigation force should be strengthened in the strategies for ore-finding, prospecting and apprising, and the idea of ＂one drill hole must obtain some reserves＂ should be thrown away.