浸染型金矿床

• 作 者: S. B. Romberger 林杉
• 出 处: 国外火山地质
• 发表日期: 1990年02期
• 关键词: 金矿带 矿床规模 容矿岩石 勘探对象 似碧玉岩 沉积岩系 蚀变作用 正断层 火山活动 矿化带

前言自六十年代早期在内华达东北部发现卡林金矿后,浸染型金矿床一直是引人注目的勘探对象。在此之前,人们已经知道这类矿床,但是,认为它们品位太低、或规模太小、以致不能赢利。由于金价低以及缺乏提炼低品位细粒金矿的技术,人们一度忽视这类矿床。但是,在金足够富集、值得开采时,人们对脉和浸染体都进行过局部的小规模开采。事实

Preface Impregnated gold deposits have been the subject of significant exploration since the discovery of Carin Gold in the northeastern Nevada since the early 1960s. Prior to this, people already know these deposits, but they are considered too low grade, or too small to be profitable. Due to the low price of gold and the lack of refinement of low-grade fine-grained gold, people once ignored this deposit. However, when gold is abundant enough to mine, there is a local, small-scale exploitation of veins and dipping bodies. fact