摘要
大渡河金矿田位于扬子地台西缘中段,康定大渡河两岸,是扬子地台西南缘一个重要的金成矿集中区,三远洞金矿床位于其中。在野外地质工作的基础上,对矿区地质特征、矿床地质特征进行了分析,并对该矿床Ⅰ~#、Ⅱ~#矿体的原生晕地球化学特征进行了深入研究,结果表明:1Ⅰ~#矿体中的Au与其他元素相关性不佳,即其他元素出现的异常无法反映出Au的矿化程度;2Ⅱ~#矿体中Ag、Hg、Sb、As与Au呈高正相关性,即该4种元素的异常可有效指示寻找金矿床;3Ⅰ~#矿体的原生晕轴向分带序列呈反(向)分带特征,结合原生晕理想叠加模型,指示矿体向下仍有延伸;4Ⅱ~#矿体原生晕轴向分带序列亦呈反(向)分带特征,指示深部可能有盲矿体的存在。上述分析成果对于区内进一步开展金矿找矿工作有一定的参考价值。
The Dadu river gold field is located in the middle of western margin of Yangtze platform, both sides of Dadu river,Kangding county,is an important gold ore concentrated area in the southwestern margin of Yangtze platform,Sanyuandong gold deposit is located in this area.Based on the field geological work,the geological characteristics of the mining area and gold deposits are analyzed in depth,the geo-chemical characteristics of primary halos of Ⅰ#,Ⅱ #ore-bodies of Sanyuandong gold deposit are studied in detail.The results show that:①the correlation of Au and other elements of Ⅰ#ore-body is not ideal,it means that the anomalies of the other elements can not reflect the mineralization degree of Au;②the cor-relation of Au and Ag、Hg、Sb、As of Ⅱ#ore-body are high,it means that the gold deposits can be indica-ted effectively by the anomalies of Ag、Hg、Sb、As;③the axial zoning sequence of the primary halos of Ⅰ#ore-body is showed with the anti-zoning characteristics,combing with the the ideal superposition model of the primary halos,it can be inferred that the ore-bodies is still extended to the depth;④the axial zoning sequence of the primary halos of Ⅱ #ore-body is also showed with the anti-zoning characteristics,it can be inferred that the blind ore-bodies may be existed in the depth.The above analysis results can provide basis for the prospecting work in the mining area.
出处
《现代矿业》
CAS
2016年第6期102-106,共5页
Modern Mining
基金
内江师范学院博士科研启动费项目(编号:15B09)
关键词
原生晕
地球化学特征
地质特征
矿化程度
理想叠加模型
轴向分带序列
Primary halos
Geochemical characteristics
Geological characteristics
Mineralization degree
Ideal superposition model
Axial zoning sequence
