| 大义山矿田岩体型锡矿地质特征及矿床成因 |
| |
| 引用本文： | 刘铁生.大义山矿田岩体型锡矿地质特征及矿床成因[J].中国地质,2002,29(4):411-415. |
| |
| 作者姓名： | 刘铁生 |
| |
| 作者单位： | 湖南省地质调查院湘中矿产所,湖南,娄底,417000 |
| |
| 基金项目： | 中国地质调查局国土资源大调查项目(199910200220) |
| |
| 摘 要： | 大义山岩体型锡矿产于汤市铺超单元的晚期介头单元（J2J)，品位中等偏低，易选，规模大，形成于局限封闭环境，具垂直分带。区域性构造，岩浆岩，围岩及局限环境联合控制了岩体型锡矿的产出及规模，笔者分析研究了岩体型锡矿的成因；岩浆在局限环境下分异演化。成矿元素不均匀分配，使介头单元侵入体富含W,Sn，在侵入体前峰或上拱部位形成岩体型锡矿的理想成矿模式和岩体型锡矿床垂向上由上而下，具由高温至低温的蚀变与矿化分带特征。
|
| 关 键 词： | 岩体型锡矿床 地质特征 矿床成因 大义山 围岩 岩浆岩 成矿模式 |
| 文章编号： | 1000-3657(2002)04-0411-05 |
Geological characteristics and genesis of rock body-type tin deposits in the Dayishan ore field |
| |
| Liu Tie sheng.Geological characteristics and genesis of rock body-type tin deposits in the Dayishan ore field[J].Chinese Geology,2002,29(4):411-415. |
| |
| Authors: | Liu Tie sheng |
| |
| Institution: | Central Hunan Institute of Mineral Resources, Hunan Institute of Geological Survey, Loudi 417000, Hunan, China |
| |
| Abstract: | Rock body-type tin deposits in Dayishan,Hunan,occur in the Lat e Jurassic Jietou unit of the Tangshipu super-unit.The ore is slightly below the medium grade and easy to dress.The deposits are large in size and formed in a restricted environment ,showing vertical zoning.Regional structures,magmat-ic rocks,country rocks and restricted environment jointly control the occur rence and size of the rock body-type tin deposits.In this paper the genesis o f the rock body-type tin deposits is analyzed.As the magma is differentiate d and evolved in a restricted environment ,ore-forming elements are unevenly d is-tributed,causing the intrusion of the Jietou unit to be rich in W and Sn a nd an ideal metallogenic model of rock body-type tin deposits is formed in the front or uparching portion of the intrusion.From above downward the rock bo dy-type tin deposits show the characteristics of vertical zoning of alteratio n and min-eralization from high to low temperatures. |
| |
| Keywords: | rock body-typ e tin deposit geological characteristics genesis of deposit Tietou unit Day ishan |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《中国地质》浏览原始摘要信息 |
| 点击此处可从《中国地质》下载免费的PDF全文 |
