| 王佳奇,韩久会.内蒙古自治区苏尼特右旗别鲁乌铜矿外围矿区金矿物质组分及金赋存状态研究[J].地质找矿论丛,2025,40(1):27-32 |
| 内蒙古自治区苏尼特右旗别鲁乌铜矿外围矿区金矿物质组分及金赋存状态研究 |
| Study on ore material of Au-minerals in Au deposit in surrounding of Bieluwu Cu deposit in Sunituyue Banner, Inner Mongolia |
| 投稿时间：2024-07-10 修订日期：2024-12-25 |
| DOI：10.6053/j.issn.1001-1412.2025.01.004 |
| 中文关键词: 金矿 物质组分 赋存状态 别鲁乌铜矿床 内蒙古 |
| 英文关键词:Au ore ore material occurrence Bieluwu Cu deposit Inner Mongolia |
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| 中文摘要: |
| 内蒙古自治区别鲁乌铜矿外围矿区东北部发现一岩浆热液型金矿床。本文通过野外勘探工作,结合标本观测、光薄片鉴定、化学成分分析等方法,查明矿区东北部金矿带主要为石英脉型金矿石,赋存于晚石炭系本巴图组绢云千枚岩中,矿石以定向构造、块状构造为主。载金矿物以硅化石英为主,黄铁矿次之,黄铁矿向浅地表氧化为褐铁矿;自然金呈独立金赋存状态,与其他金属矿物无明显接触;以裂隙金为主(80%)、粒间金次之(20%),粒径0.002~0.05 mm,微粒金(≤0.01 mm)占75%,总体属微(细)粒金。金矿形成过程按矿脉相互穿插关系、矿物共生组合及围岩类型分为气成热液期、热液期、表生期,成矿作用以热液期为主,热液期可分为3个阶段:石英-硫化物阶段、金-石英-硫化物阶段、碳酸盐阶段。 |
| 英文摘要: |
| In surrounding (northeast) of Bieluwu Cu deposit occurs a magmatic hydrothermal Au deposit. Field investigation, samples and thin section observation of the Au deposit were carried out. It is a quartz vein type Au deposit occurring in sercite phyllite of Late Carboniferous Benbatu formation with directional and massive structure. The gold carrier is silicifified quartz, then pyrite. The pyrite is oxidized to limonite upward surface. Native gold occur indepently without evedent contact with other metal minerals. 80 percent of the gold is fissur gold, 20 percent interganular gold. On the whole the gold is fine to micro-grained gold, 0.002~0.05 mm and 75% less than or equal to 0.01 mm. According to cutting relationship of gold veins, paragenesis of minerals and enclosing rock types the gold metallogenic process includes quartz-sulfide stage, gold-quartz-sulfide stage and carbonate stage and two epoches, i.e. the main pneumatogetic hydrothermal epoch and sepergene epoch. |
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