The Rmoelectricity Property and Deep Metallogenic Forecast of Pyrite in Heilangou Gold Field of Jiaodong,Shandong Province
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摘要: 黑岚沟金矿田位于胶东中部栖霞-蓬莱金成矿带北段，区内发育黑岚沟、河西、侯各庄、初格庄等多个石英脉型金矿。其金矿化主要出现在含黄铁矿和多金属硫化物的石英脉中。黄铁矿是主要的载金矿物。因此，基于黄铁矿热电性标型特征指导找矿勘查具有实际意义。采用新型原位矿物热电仪进行黑岚沟金矿集区46件主成矿阶段黄铁矿的热电性测试，结果表明，在该区-170～-616 m标高内，黄铁矿热电导型P型率大多在90%以上，暗示目前揭露的矿体仍然处于矿床上部或顶部；特别是热电系数主要集中在200～350 μV·℃-1，且其离散性较大，推测矿床垂向延伸较大；通过热电系数计算成矿垂向延伸指数平均值为30.4%，该值也说明目前探采部位属于矿床上部。综合分析，认为黑岚沟金矿田深部仍然具有较大的成矿潜力。Abstract: Heilangou gold field is located in the northern part of Qixia-Penglai gold metallogenic belt of Jiaodong,Shandong province.There are many quartz vein type of gold deposits as Heilangou, Hexi, Hougezhuang and Chugezhuang,etc.The gold mineralization mainly occurs in quartz veins containing pyrite and polymetallic sulfide. Pyrite is the main gold bearing mineral,therefore the prospecting based on the typomorphic characteristics of pyrite thermoelectricity is of practical significance.The thermoelectric properties of 46 pyriteswere measured by a new in-situ mineral thermoelectric instrument. The results show that the P-type ratios of pyrite are mostly above 90%,being in the elevation range of -170~-616m, indicating that the ore bodies exposed are at the top of the deposit.The thermoelectric coefficient is especiallyconcentrated in the range of 200~350 μV·℃-1.The average value of the vertical extension index (30.4%) calculated by the thermoelectric coefficient indicates that the current exploration position is in the upper part of the deposit.It is held thatthere is still much metallogenic potential deep in Heilangou gold field.
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Key words:
- pyrite /
- thermoelectric property /
- gold mine /
- Heilangou gold field /
- Jiaodong
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