河南洛宁石寨沟金矿床物质组分及金赋存状态研究

河南洛宁石寨沟金矿是构造蚀变岩型金矿床。在野外工作的基础上,采用光薄片鉴定、化学分析、化学物相分析等技术方法,查明了矿床类型。该矿床矿石类型主要为蚀变岩型,矿石以角砾状、块状构造为主,其次为浸染状构造。脉石矿物主要为石英,其次为绢云母和绿泥石等,金矿物存在形式分为包裹金、粒间金及裂隙金3种类型,粒度主要集中在0.01~0.074 mm之间。

Material components and occurrence states of gold in Shizaigou Gold Deposit in Luoning of Henan

Shizaigou Gold Deposit in Luoning, Henan Province was a tectonic alteration zone type. On the basis of detailed field work, the authors employed analytical techniques of thin sections, chemical phase analysis to determine the type of the deposit. Ore type in the gold deposit was an alteration zone type. Ores were mainly breccias and massive structures, followed by disseminated structure. Gangue minerals were mainly quartz, next sericite and chlorite. The existing forms of gold ores fell into three types: inclusion gold, intergranular gold and fissure gold, with size ranging generally from 0.01 mm to 0.074 mm.