| 姚晓峰.西藏尕尔穷铜金矿金矿物特征研究[J].地质与勘探,2011,47(6):1018-1025 |
| 西藏尕尔穷铜金矿金矿物特征研究 |
| Characteristics of Gold-bearing Minerals in the Ga’erqiong Copper-Gold Deposit, Tibet |
| 投稿时间：2010-12-07 修订日期：2011-04-06 |
| DOI： |
| 中文关键词: 尕尔穷铜金矿 金矿物 赋存状态 成矿阶段 找矿标志 西藏 |
| 英文关键词: Ga’erqiong copper-gold deposit, gold-bearing minerals, occurrence, ore-forming stages, prospecting indicator, Tibet |
| 基金项目:班怒成矿带西段铜金成矿背景与成矿条件研究(编号201011013)、青藏专项(编号1212010818089)、西藏卓朗基矿业投资有
限公司详查项目资助 |
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| 中文摘要: |
| [摘 要]尕尔穷铜金矿床是班公湖-怒江成矿带西段第一个达到详查程度的矽卡岩型铜金矿床。通过对矿床中金矿物的电子显微镜观察和扫描电镜能谱分析,查明了金矿物的类型及赋存状态,划分了成矿阶段。研究表明,金矿物有银-金矿物系列、铜-金矿物系列和少量碲化物类,主要有自然金、银金矿、金银矿、铜质金银矿、铜金矿、铜质银金矿和碲金银矿。金矿物主要为显微金,呈独立矿物形式产出,可见裂隙金、晶隙金和包体金形式,其赋存状态简单,易于选出。矿区金矿化主要发生于热液期的石英-硫化物-金矿物阶段和方解石-金矿物阶段,前者主要形成铜-金系列和银-金系列,后者主要形成银-金系列矿物。硅化和碳酸盐化是金矿化的直接指示标志。 |
| 英文摘要: |
| Abstract:The skarn-type Ga’erqiong copper-gold deposit is the first one in which a detailed survey was carried out in the western Banggonghu - Nujiang metallogenic belt. The purpose of this work is to determine the type and the occurrence of gold minerals and to divide the ore-forming phrase by electron microscope observation and scanning electronic microscope analysis. The result indicates that the gold-bearing minerals in the deposit involve Ag -Aumineral suite, Au-Cu mineral suite and few telluride, including native gold, electrum, kustelite, cuprian kustelite, cuproaurite, cuprian electrum and petzite. They are chiefly micro independent minerals. Occurring in the simple form of fissure gold, intercrystalline gold and inclusion gold, gold can be selected easily during the ore dressing. Within the hydrothermal phrase, the gold mineralization concentrated on the quartz-sulfide-gold and calcite-gold stage, in which Ag -Au and Au-Cu mineral suite formed in the earlier stage and Ag - Au mineral suite formed later. Solidification and carbonatization are direct indicators for the gold-mineralization in region. |
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