黄金科学技术 ›› 2024, Vol. 32 ›› Issue (2): 207-219.doi: 10.11872/j.issn.1005-2518.2024.02.149
俞炳1,2,3,4(),丁正江1(
),陈伟军5,李肖6,刘彩杰1,薛建玲3,4,曾庆栋7,8,范宏瑞7,8,吴金检7,8,张琪彬1
Bing YU1,2,3,4(),Zhengjiang DING1(
),Weijun CHEN5,Xiao LI6,Caijie LIU1,Jianling XUE3,4,Qingdong ZENG7,8,Hongrui FAN7,8,Jinjian WU7,8,Qibin ZHANG1
摘要:
西岭金矿床位于三山岛金矿床东侧,是当前胶东金矿集区内新发现的单一矿体规模最大、埋藏最深的金矿床。在地质观察的基础上,开展了不同深度的黄铁矿热电性特征研究。结果表明:西岭金矿床黄铁矿热电系数离散范围和离散度整体较大且相对稳定;浅部黄铁矿热电导型均为N型,而深部均为P型;成矿温度主要集中在250~360 ℃之间,属中—高温热液型金矿床;计算得出黄铁矿热电导型变化梯度值较小,并估算出矿体剥蚀率约为75%。综合黄铁矿各类热电性特征参数,认为西岭金矿床深部仍有较大的找矿前景,矿体最大埋深可达-3 000 m标高。已知金矿体具有向NE侧伏的规律,认为沿着NE侧伏方向至-3 000 m标高处是有效的深部找矿靶区位置。西岭金矿床黄铁矿热电性特征研究可为胶东地区金矿床的深部找矿预测提供科学依据。
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