| 李红阳,丁振举,杨竹森,罗泰义,高振敏.金家庄超基性岩型金矿蚀变矿化过程中物质组分变化定量研究[J].地质找矿论丛,2000,(4):328-336 |
| 金家庄超基性岩型金矿蚀变矿化过程中物质组分变化定量研究 |
| QUANTITATIVE STUDIES ON MASS CHANGE DURING ALTERATION AND MINERALIZATION PROCESSES IN THE JINJIAZHUANG ULTRABASIC ROCK-TYPE GOLD DEPOSIT |
| 投稿时间：2000-05-22 修订日期：2000-10-16 |
| DOI：10.6053/j.issn.1001-1412.2000.4. 006 |
| 中文关键词: 超基性岩型金矿床 围岩蚀变 物质组分变化 金家庄 |
| 英文关键词:ultrabasic rock-type gold deposit wall-rock alteration mass change Jinjia zhuang |
| 基金项目:中国科学院王宽城教育基金;矿床地球化学开放研究基金;地矿部“八五”科技攻关项目(85-01-002-06-01) |
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| 中文摘要: |
| 金家庄金矿围岩蚀变主要为蛇纹石化-滑石化、碳酸盐化、绿泥石化及硅化。根据不同蚀变程度透辉岩化学成分与微量元素组分得失定量计算,SiO2,CaO,Al2O3,Na2O和CO,Cr,Pb等在各类蚀变透辉岩中明显亏损,在矿化蚀变岩和含金石英细脉中显著富集;CO2,H2O,S和Au,Cu在各类蚀变-矿化岩石中均显富集;TiO2,MgO,V,Sr及Pr表现为相对“惰性”。SiO2,CaO,Al2O3等物质组分得失变化主要反映了蚀变矿化过程中元素在超基性岩内的再分配。围岩蚀变主要为超基性岩遭受富含CO2热水作用而发生的系列水-岩反应产物。 |
| 英文摘要: |
| Wall-rock alteration associated with the Jinjiazhuang gold ore deposit is dominanted by, serpentinization talcization, carbonatization, chloritization and silicification. On the basis of the calculation of the gains and losses of major and minor elements in various altered diopsidites, SiO2,Ca,Al2O3,Na2O,CO,Cr and Pb are obviously depleted in various types of altered diopsidites, and are remarkably concentrated in mineralized altered rock and auriferous quartz veinlets; CO2,H2O S,Au and Cu are concentrated in the all altered and mineralized rocks mentioned above; Ti2O,MgO,V,Sr and Pr show inertia compared to the others. The gains and losses of SiO2,CaO,Al2O3 reflect that the components may have been redistributed within source rocks-ultrabasic rocks during the wall-rock alteration, with CO2 rich fluids of meteoric origin reacted with the source rocksul-trabasic rocks. |
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