第四纪沉积物覆盖区地电化学法寻找隐伏金矿——以安徽凤阳地区为例
摘要
为了尽快突破第四纪厚层沉积物覆盖区找矿难题,在安徽凤阳开展了地电化学方法技术找矿可行性研究,即采用低电压(9 V)偶极地电提取与土壤离子电导率测量组合方法开展找矿工作。结果表明,在隐伏金矿体上方出现明显的电化学异常。据此,在南部隆起地段发现了1处找矿有利部位,并提出深部找矿工作建议。经后期钻探工程验证,发现1个品位为2 g/t金矿体、2个金矿化体。
For prospecting the buried deposit in the huge covered sediment region formed during the Quaternary period as soon as possible,it is necessary to use geoelectro-chemical method to inspect the available gold deposit under the huge coverage of alluvium in Fengyang Anhui province.Methods include geoelectrio-chemical extraction technique to get the icon information with both electrode in low-voltage(9 V),and to measure icon conductance in the surface soil.It is verified that the geoelectro-chemical abnomaly found buried gold deposit.So a swell zone in the south field for seeking buried ore bodies is selected,and a prospecting area gold deposit is found.One ore body(average grade 2 g/t)and two mineralized body(average grade<2 g/t) are found in the testing drilling.
For prospecting the buried deposit in the huge covered sediment region formed during the Quaternary period as soon as possible,it is necessary to use geoelectro-chemical method to inspect the available gold deposit under the huge coverage of alluvium in Fengyang Anhui province.Methods include geoelectrio-chemical extraction technique to get the icon information with both electrode in low-voltage(9 V),and to measure icon conductance in the surface soil.It is verified that the geoelectro-chemical abnomaly found buried gold deposit.So a swell zone in the south field for seeking buried ore bodies is selected,and a prospecting area gold deposit is found.One ore body(average grade 2 g/t)and two mineralized body(average grade<2 g/t) are found in the testing drilling.
引文
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[3]赵利青,宓荣三,陈祥,等.在新区快速优选靶区的一些做法——以皖东—苏北地区为例[J].黄金地质,2001,7(2):45-51.
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[5]罗先熔,康明,欧阳菲,等.地电化学成晕机制、方法技术及找矿研究[M].北京:地质出版社,2007:134-147.
[2]罗先熔.再论地球电化学测量法寻找隐伏矿床[J].桂林冶金地质学院学报,1994,14(3):295-301.
[3]赵利青,宓荣三,陈祥,等.在新区快速优选靶区的一些做法——以皖东—苏北地区为例[J].黄金地质,2001,7(2):45-51.
[4]陈柏林,董法先,李中坚.韧性剪切带型金矿成矿模式[J].地质评论,1999,24(5):186-191.
[5]罗先熔,康明,欧阳菲,等.地电化学成晕机制、方法技术及找矿研究[M].北京:地质出版社,2007:134-147.
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