| 龙首山钠交代岩型铀矿地球化学特征及其控矿因素 |
| |
| 引用本文： | 王青山.龙首山钠交代岩型铀矿地球化学特征及其控矿因素[J].甘肃地质学报,2008,17(1):23-29. |
| |
| 作者姓名： | 王青山 |
| |
| 作者单位： | 甘肃省核地质二一九大队 甘肃天水741025 |
| |
| 摘 要： | 龙首山钠交代岩型铀矿化十分发育。钠交代岩几乎全由新生的钠长石及少量新生绿泥石、方解石和粉末状赤铁矿组成。钠交代岩及其中的铀矿化与花岗岩有密切的空间关系.从稳定同位素资料说明,铀主要来自花岗岩,成矿热液以再平衡混合岩浆水为主。钠交代岩及其铀矿化的空间定位受NW向大断裂及其次级近EW向断裂的控制,其多期活动有利于铀矿化形成。大型特大型钠交代岩体保存较完整是形成铀矿床的必要条件之一。铀矿体有明显的扩散晕,在物化探方法配合下,寻找盲矿。
|
| 关 键 词： | 钠交代岩 铀矿化 富钠花岗岩 断裂控矿 龙首山 |
GEOCHEMICAL FEATURES AND ORE- CONTROL FACTORS
OF SODA METASOMATITE TYPE URANIUM
DEPOSITS IN LONGSHOUSHAN |
| |
| WANG Qing-shan.GEOCHEMICAL FEATURES AND ORE- CONTROL FACTORS
OF SODA METASOMATITE TYPE URANIUM
DEPOSITS IN LONGSHOUSHAN[J].Acta Geologica Gansu,2008,17(1):23-29. |
| |
| Authors: | WANG Qing-shan |
| |
| Institution: | WANG Qing-shan (No.219 Geology Team,Gansu bureau of nuclear geology, Tianshui 741025,China) |
| |
| Abstract: | The uranium mineralization of soda metasomatite type developed well in Longshou Mountain. The soda metasomatite is mainly composed of albitite, and a few of chlorite, calcite and powdered hematite. The soda metasomatites and its uranium mineralization are close related with alkaline - rich granite that contains more sodium oxide than potassium oxide. Data of stable isotope show that the uranium comes from granite, and the mineralizing fluid is mainly composed of the mixed-rebalance magma fluid. The location of the soda metasomatite and its uranium mineralization is controlled by west-north and secondary west-east fractures that is good to the uranium mineralization. The large or extra-large scale soda metasomatite rock mass kept in good condition is one of the necessary conditions. Radioactive characteristics show that geophysical and geochemical prospecting method are feasible on discovering the buried uranium ore body in deep. |
| |
| Keywords: | soda metasomatite uranium mineralization soda-rich granite ore controlled by fractures Longshou Mountain |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《甘肃地质学报》浏览原始摘要信息 |
| 点击此处可从《甘肃地质学报》下载免费的PDF全文 |
|
