摘要
云南近年来相继发现了一批红土型金矿床（点），成为金矿找矿工作的主攻目标之一。新构造运动期是云南红土型金矿的重要成矿期。由于地壳快速抬升，云南红土型金矿表现出对基岩含金性依赖性强、风化剖面较薄、成熟度偏低和发育不全等特点，红土化成矿作用长期保持在初－中期阶段。金矿物成色多大于８５０，呈显微－次显微状镶于褐铁矿中。矿石组构依风化程度不同分为三组。
Some laterite gold deposits have been discovered in Yunnan which has become a new prospecting target these years.The neotectonic period is the principal metallogenic period of the laterite gold deposits.As the fast elevation of the crust,the laterite gold deposits show some characters such as higher dependence upon the gold bearing property of the bedrocks,small thickness in weathered section,the lower maturity and the incomplete development etc.and their mineralization keeps at the initial to middle stage.The fineness of gold minerals are mostly geater than 850. The gold minerals are native gold and electrum and exist as the submicrominerals to microminerals in the limonites.According to the weathered degree,the ore fabrics are divided into three groups.
出处
《黄金》
CAS
北大核心
1999年第3期1-4,共4页
Gold
