地球化学勘查快速圈定找矿靶区——以黑龙江省黑河市大新屯锑-金矿床的发现为例
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摘要
黑河市大新屯锑-金矿床位于大兴安岭成矿带东北部,区内构造、岩浆活动频繁.1∶5万水系沉积物Sb、Au、Hg异常强度较高,规模较大,是金及多金属成矿有利部位.为了对区内1∶5万水系沉积物异常进行评价,选定了规模最大的新07Hs-35异常,利用土壤地球化学测量工作方法对异常进一步查证.经土壤地球化学测量工作后圈定Sb、Au、Hg、Ag、As、W土壤地球化学异常多处,以Sb、Hg、Au异常为主,各元素异常浓集中心吻合较好.因此利用槽探工程对圈定的土壤地球化学异常进行了验证,发现了锑-金矿体,从而确定了大新屯锑-金矿找矿靶区,说明地球化学勘查快速确定找矿靶区是成功的.
The Daxintun antimony-gold deposit is located in the northeast of the Daxinganling metallogenic belt, with frequent tectonic and magmatic activities. The Sb, Au, Ag and Hg anomalies in stream sediments are high and in large scale.This area is the favorable metallogenic position for gold and polymetal. In order to assess the of stream sediment anomalies,the 07Hs-35 anomaly is chosen to be verified by soil geochemical survey method. With the soil geochemical survey, some anomalies of Sb, Au, Hg, Ag, As and W are delineated, among which Sb, Hg and Au anomalies are dominated. The concentration centers of each element are essentially coincident. The delineated soil geochemical anomalies are then confirmed by trenching, with the finding of antimony-gold orebodies. The Daxingtun antimony-gold ore prospecting target is successfully established.
The Daxintun antimony-gold deposit is located in the northeast of the Daxinganling metallogenic belt, with frequent tectonic and magmatic activities. The Sb, Au, Ag and Hg anomalies in stream sediments are high and in large scale.This area is the favorable metallogenic position for gold and polymetal. In order to assess the of stream sediment anomalies,the 07Hs-35 anomaly is chosen to be verified by soil geochemical survey method. With the soil geochemical survey, some anomalies of Sb, Au, Hg, Ag, As and W are delineated, among which Sb, Hg and Au anomalies are dominated. The concentration centers of each element are essentially coincident. The delineated soil geochemical anomalies are then confirmed by trenching, with the finding of antimony-gold orebodies. The Daxingtun antimony-gold ore prospecting target is successfully established.
引文
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[2]马晓阳,崔玉军,李祥佑.大兴安岭北部森林沼泽区1∶5万水系沉积物测量方法研究[J].物探与化探,2002,26(6):433—435.
[3]牛洪斌,张新虎,金治鹏,等.区域化探找矿新案例——甘肃代家庄铅锌矿的发现[J].物探与化探,2004,28(3):242—248.
[4]杨继权,孔含泉,胡建文.黑龙江省多宝山-宽河成矿带Cu-Au成矿规律与成矿预测[J].地质与资源,2005,14(3):192—196.
[5]任天祥,李明喜,徐耀先,等.高寒山区表生作用地球化学特征及区域化探方法的初步研究[J].地质论评,1983,29(5):428—436.
[6]金浚,丁汝福,陈伟民.森林沼泽景观元素存在形式及化探方法研究[J].地质与勘探,2002,38(4):50—55.
[7]吕军,王建民,王洪波,等.土壤地球化学测量在三道湾子金矿床的应用[J].物探与化探,2005,29(6):515—518.
[8]吕军,曹亚平,韩振哲,等.地球化学测量找矿成功案例——黑河市北大沟金矿床的发现[J].物探与化探,2009,33(5):515—519.