| 张生,李统锦,陈义兵.长坑矿床矿化过程中元素的质量迁移及金银关系[J].地质找矿论丛,1997,(3):33-40 |
| 长坑矿床矿化过程中元素的质量迁移及金银关系 |
| MASS TRANSFER IN MINERALIZING PROCESS AND Au-Ag RELATION IN THE CHANGKENG DEPOSIT |
| 投稿时间：1997-03-12 修订日期：1997-05-26 |
| DOI：10.6053/j.issn.1001-1412.1997.3. 004 |
| 中文关键词: 质量迁移 地球化学异常 共生分离 金银矿床 广东 |
| 英文关键词:mass transfer geochemical anomaly paragenesis and separation gold-silver deposit Guangdong Prvince |
| 基金项目:中科院博士点基金;北京中关村地区联合分析测试中心资助 |
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| 中文摘要: |
| 在长坑矿床的金矿化和银矿化过程中,质量迁移计算显示SiO2、Al2O3、FeO、Ni、Zn、As、Ba均为带人组分,而CaO、MgO、Na2O、Sc、V、Co、Bi、Sr、REE则为带出物质；Fe2O3、MnO、Cu、Pb的得失性质因矿化类型而异,轻、重稀土在金矿化中发生分离,但在银矿石形成过程中却表现出比较一致的行为。虽然金、银之间具有矿化分离的特点,但在地球化学富集上却存在共生关系,表明金、银矿化是相同热液成矿事件在不同阶段和条件下的产物。找矿时应注意硅化蚀变和As、Pb、Zn的异常以及金银共生矿体的存在。 |
| 英文摘要: |
| Calculation of mass transfer with equation presented by grant (1986) shows that SiO2,Al2O3, FeO, Ni, Zn, As and Ba are gained components, while CaO, MgO, Na2O, Sc, V, Co,Bi, Sr and REE are lost components for both gold and silver mineralizations in the Changkeng deposit. The gains or losses of Fe2O3, MnO, Cu and Pb depend on the type of mineralization.Separation of HREE from LREE occurs in mineralizing process of gold, but rare-earth elements show similar behavior during formation of silver ore. The relations of metallogenic separation and co-enrichment between gold and silver suggest the mineralizations of gold and silver represent re-sults of unified hydrothermal process in different stages. Silicification of country rock and anoma-lies of As, Pb and Zn should be useful prospecting indicators. |
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