汞气测量在东安线江冲锑矿普查中的应用

THE USE OF MERCURY GAS MEASURE IN Sb—DEPOSIT RECONNAISSANCE IN XIANJIANGCHONG, DONG'AN

常与、、、等元素共生,因此在锑矿体周围多形成气晕。汞的气体晕穿HgCuPbZnSb透力极强,是覆盖区隐伏矿的重要找矿标志。线江冲锑矿区圈出个汞气异常带:Ⅰ号异常带长4,宽～,异常值一般～10 000 m100200 m50010 000 ng/m3,最高>499 969 ng/m3,连续性好;Ⅱ号异常带长,宽～,异常值与Ⅰ号异常带相同,较好地反映了②、③号矿脉的空间1 000 m100200 m展布;Ⅲ号异常带长,宽～,其展布与断裂的展布吻合;Ⅳ号异常带是800 m100280 mF1断裂的反映。分析类比表明,号异常带是含矿断裂的反映,经工程验证,新发现了⑤号矿脉。

Element Hg relative with Cu, which always occurs together with Cu, Pb, Zn, Sb etc.,alwaysforms Hg gas around Sb ore. The penetrating power of Hg gas is very strong, which is an important marking of exploitation of covered and blind deposits. 4 regions of Hg gas abnormity were circled ～out in Xianjiangchong Sb deposits: No.1 region of abnormity 10,000 m long, 100200 m wide, ～abnormal value 50010,000 ng/m3,>maximum value499,969 ng/m3, good continuity; No.2 region, ～1,000 m long, 100200 m wide, the abnormal value is the same as that of No.1, reflecting well the ～space distribution of the veins of No.1 and 2; No.3, 800 m long, 100280 m wide, the distribution matches with the fault distribution; No.4 was the reflection of F1 fanlt. Analysis and analogy indicate that No.1 abnormity region was the reflection of fault of Dre-bearing bed. No.5 ore vein was found by engineering test.