摘要
熊耳群火山岩系中构造蚀变岩型金矿(北岭金矿、庙岭金矿)和爆破角砾型金矿(店坊金矿)中的元素Au与Te、Se呈不同程度的正相关性,且金品位在地表高于深部,富矿石是火山浅成热液成矿的标志。熊耳群火山岩无(弱)矿化构造蚀变带中Au与Te、Se的相关性较差,进而出现负相关性。Au与Te、Se的正相关性信息是探寻火山岩系中金矿床的重要标志,尤其是浅部产出的富碲化物的金矿床。
The element Au is increased with the increase of Te and Se on different extent in the tectonic-altered-rock type gold deposits in Xionger Group (Beiling gold deposit and Miaoling gold deposit) and the explosion-breccia type gold deposit (Dianfang gold deposit). And the grade of the gold in the surface is higher than in the deep part. The rich ore is from the mineralization of the shallow volcanic hydrothermal solution. In the non-mineralization belt, no correlation between Au and Te, Se was found. So the correlation is the sign of exploring the gold ore in the volcanic rocks of Xonger Group, especially in the gold ore rich in Te at the shallow part.Key works: Xonger Group; volcanic rocks; altered-rock gold deposit; geochemisitry; correlativity
出处
《地质调查与研究》
2003年第1期45-51,共7页
Geological Survey and Research
基金
国家自然科学基金(49772117)
