| 王亚飞.含金磷酸盐矿物的发现及其地质意义
——以山东牟平腊子沟金矿为例[J].地质与勘探,2022,58(6):1170-1178 |
| 含金磷酸盐矿物的发现及其地质意义
——以山东牟平腊子沟金矿为例 |
| Discovery of gold-bearing phosphate minerals and its geological significance:An example of the Lazigou gold deposit in Muping, Shandong Province |
| 投稿时间：2022-02-17 修订日期：2022-08-24 |
| DOI：10.12134/j.dzykt.2022.06.003 |
| 中文关键词: 电子探针 金的赋存状态 含金独居石 含金磷灰石 金的磷酸根络合物 腊子沟金矿 牟平 山东 |
| 英文关键词: electronic probe microanalysis, occurrence state of gold, gold-bearing monazite, gold-bearing apatite, phosphate complexes of gold, Lazigou gold deposit, Muping, Shandong |
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| 中文摘要: |
| 山东牟平腊子沟金矿位于华北板块苏鲁造山带胶南-威海隆起区，牟平-乳山金矿成矿带中段，区内岩浆活动频繁，构造活动强烈，成矿地质条件优越。本文通过镜下显微结构观察、电子探针测试分析对腊子沟金矿载金矿物的组成、成分及金的赋存状态进行了研究，首次在该矿区发现含金独居石和含金磷灰石，金含量达到0.283%～0.456%，推测金可能通过类质同象形式替代磷灰石中的Ca2+或独居石中的稀土元素(Ce2+、 La2+)以晶格金的形式存在。前人研究认为成矿流体中金主要以Au[HS]2－和AuCl2－络合物形式进行迁移，本次含金磷酸盐矿物的发现表明：可能部分金以磷酸根络合物形式进行迁移。 |
| 英文摘要: |
| The Lazigou gold deposit in Muping District ofShandong Provincwe is located in the Jiaonan-Weihai uplift area of the Sulu orogenic belt of North China Plate and in the middle of the Muping-Rushan gold metallogenic belt, with frequent magmatic activity, tectonic activity and superior metallogenic geological conditions are superior. In this work, the mineral composition, chemical composition and occurrence state of gold-bearing minerals were studied by microscopic observation and electron probe test analysis. For the first time, gold-bearing monazite and gold-bearing apatite were discovered in this mining area with gold content of 0.283% ~ 0.456%. It is speculated that gold may be substituted for Ca2+ in apatite or REE (Ce2+, La2+) in monazite in the form of lattice gold through the form of isomorphism. The previous results show that Au [HS] 2- and AuCl2－complexes are the main forms of gold migration in ore-forming fluids, and the discovery of gold-bearing phosphate minerals indicates that part of the gold is transferred in the form of a phosphate complex. |
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