云南北衙铅矿氧化带含金性研究

Ore-bearing Property Study of Oxidation Zone of the Beiya Lead Deposit, Yunnan

北衙铅矿位于云南省大理白族自治州.矿床氧化带发育,其中发现了自然金,构成氧化带型金矿.本文对氧化带中金的赋存状态及其矿化特点进行了研究,并探讨了金的次生富集机理.

The Beiya lead depo sit is located in the Bai Autonomous Prefecture of Dali, Yunnan Province.The oxidation zone of the deposit is well developed and in which native gold was discovered. Thegold content in the oxidation zone, reaching a few tens grams per ton, is higher enough to form acommercial gold deposit of 'oxidation zone type'. The mode of occurrence of the gold in the oxidation zone, mineralization features and the secondary enrichment mechanism of the gold are systematically dealt with in this paper.