小西南岔金铜矿床金的赋存状态研究

小西南岔金铜矿床属次火山—斑岩型矿床,矿化类型主要为浸染型和硫化物方解石石英脉型。通过电子探针及显微镜下分析,结果表明,矿石中金矿物主要为自然金、银金矿;金矿物形态复杂多样,以显微金和细粒金为主;金矿物的嵌存状态以包裹金、粒间金为主。金主要富集于硫化物方解石石英脉中,在空间上金多分布在矿体中上部。

Study on occurrence status of gold in Xiaoxinancha Copper-Gold Deposit

Xiaoxinancha Copper -Gold Deposit is a secondary volcanic-porphyry type deposit .The mineralization type is mainly dissemination and sulfide calcite quartz vein type .Electronic probe and microscope analyses show that gold minerals mainly take the form of native gold and electrum;gold minerals are complex ,dominated by micro gold and fine particle gold;gold minerals are embedded as locked gold and intergranular gold .Gold is primarily enriched in sulfide calcite quartz veins and is spatially deposited in the middle and upper part of orebodies .