摘要
甘肃阳山金矿带属于类卡林型金矿床,金资源量是达到318t,矿区花岗岩脉较为发育,与金矿化关系密切,重要的找矿标志之一。通过花岗岩的系统取样和主微量、稀土元素的分析结果,分析岩石地球化学特征,认为:原斜长花岗斑岩,称为花岗岩较为准确,归类为I型花岗岩和S型花岗岩,为活动大陆边缘的产物及同碰撞和碰撞后形成花岗岩的特点。矿带花岗岩成矿潜力大,可以加强矿区多金属综合利用研究工作。
Gold ore belt belongs to para-Carlin type gold deposits from Yangshan Wenxian in Gansu province. Gold resources amount reaches to 318 tons. The better development of granite dikes in mining area is closely related to gold mineralization, it is one of the prospecting criteria. According to analysis results of systematic sampling,main trace element and rare earth elements of granite, and lithogeochemical characteristics, the paper holds that plagioclase granite porphyry is named granite which is more accurate, and classified mainly I- type granite and S-type granite. It reflects the products of active continental margin and the characteristics of formative granite in syn-collision and after collision. Ore-forming potential of ore belt granite is very large. So research work for polymetallic comprehensive utilization in mining area can he strengthened.
出处
《矿产与地质》
2009年第4期345-351,共7页
Mineral Resources and Geology
关键词
花岗岩
岩石化学
金矿
阳山
甘肃
granite, petrochemistry, gold ore, Yangshan, Gansu
