| 四川庙子毒重石-钡解石-钡白云石型钡矿床的成因 |
| |
| 引用本文： | 唐菊兴,林文第,高德荣,慕纪录.四川庙子毒重石-钡解石-钡白云石型钡矿床的成因[J].矿床地质,1998,17(3):264-276. |
| |
| 作者姓名： | 唐菊兴 林文第 高德荣 慕纪录 |
| |
| 作者单位： | 成都理工学院资源与经济系,成都 |
| |
| 基金项目： | 四川省科委重点科研项目（94-64） |
| |
| 摘 要： | 庙子钡矿床是属于海底喷流热水沉积型毒重石 -钡解石 -钡白云石矿床。典型的海底喷流岩组合为毒重石岩 硅岩 硅质板岩 碳质板岩 灰岩 ,典型的海底喷流岩构造有角砾状、网脉状、气孔状、块状、层纹状、条带状等。钡矿石的主要组分为毒重石、钡解石、钡白云石。矿石的形成还与成岩早期有机质、细菌活动有着密切的关系。含矿岩系的岩石化学、微量元素、稀土元素地球化学特征表明硅岩、毒重石岩是在低能、缺氧、强还原条件下海底喷流热水沉积形成。钡矿形成环境为早寒武世麦地坪期扬子地台北部的陆棚边缘滞留盆地
|
| 关 键 词： | 海底喷流热水沉积 毒重石-钡解石-钡白云石 四川庙子钡矿床 |
THE GENESIS OF THE MIAOZI WITHERITE- BARYTOCALCITE-BARYTODOLOMITE DEPOSIT IN WANYUAN CITY, SICHUAN PROVINCE |
| |
| Tang Juxing,Lin Wendi,Gao Derong and Mu Jilu.THE GENESIS OF THE MIAOZI WITHERITE- BARYTOCALCITE-BARYTODOLOMITE DEPOSIT IN WANYUAN CITY, SICHUAN PROVINCE[J].Mineral Deposits,1998,17(3):264-276. |
| |
| Authors: | Tang Juxing Lin Wendi Gao Derong and Mu Jilu |
| |
| Abstract: | Based on systematic studies, the authors have reached the conclusion that the Miaozi barium deposit belongs to witherite barytocalcite barytodolomite type of exhalative hydrothermal sedimentary origin. The typical assemblage of exhalative cherts is witherite (barytocalcite, barytodolomite) cherts siliceous slate carboniferous slate limestone and the typical fabrics include brecciated, stockwork, fumarolic, massive, laminated and striped structures. The barium deposit was formed in a stillwater basin on the continental margin of northern Yangtze plaform at Early Cambrian Maidiping time. Ore minerals consist of witherite, barytocalcite and barytodolomite. The formation of orebodies is also closely connected with organic and early diagenetic activities. The evidence of lithochemistry, trace elements and REE geochemistry of ore\|bearing sequence suggests that exhalative cherts and witherite are of exhalative hydrothermal sedimentary origin in a low energy, anoxic and highly reduced environment. |
| |
| Keywords: | Miaozi barium deposit exhalative hydrothermal sedimentation witheritebarytocalcite barytodolomite |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《矿床地质》浏览原始摘要信息 |
| 点击此处可从《矿床地质》下载免费的PDF全文 |
|
