磁力测量在隐伏含铁建造型金矿床及外围矿权区中的应用

Application of magnetic measurement on concealed iron-containing gold deposit and peripheral mine

坦桑尼亚某金矿区及外围矿区均处在空旷的季节性沼泽地带内,由于受自然条件的限制,在地质(没有基岩露头)、化探(沼泽性黑土覆盖厚度大)、电法(低阻屏蔽干扰严重)等找矿方法效果均不佳的情况下,磁力测量发挥了间接寻找隐伏含铁建造型金矿床的重要作用,取得了反映地下深部与金矿床有关的含铁建造引起的良好磁力异常,为矿区和外围矿区的钻探工程布置,进一步扩大矿床规模,提供了强有力的磁测资料。

One gold mining area in Tanzania and its peripheral mine are in open seasonal swamp zone. Due to the limitations of natural conditions, geological （ no bedrock outcrop ）, geochemical （ the swamp black coveting thick- ness）, electrical （low resistive shielding serious interference） exploration methods all worked poorly, while magnetic measurement played an important role in search for concealed iron-containing gold deposit and reflected a deep under- ground gold related iron-containing construction causing a good magnetic anomaly which contributes strong magnetic data to commissioning the peripheral mine drilling engineering layout and to further expanding the deposit scale.