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庙垭碳酸岩型稀土矿床成矿过程初探
吴敏; 许成; 王林均; 宋文磊
2011
Source Publication矿物学报
Issue3Pages:478-484
Other Abstract庙垭碳酸岩位于东秦岭武当山隆起的西南缘,呈岩株状产出,主要由方解石组成,富含稀土矿物,是我国大型轻稀土矿床。该区全岩的C-O同位素数据δ18O=11‰~12.49‰,δ13C=-3.79‰~5.68‰,落在了初始火成碳酸岩的范围之外,表明可能受到高温分离作用的影响。流体包裹体相态较单一,主要由气液两相包裹体和气液三相包裹体组成,均一温度120~400℃,为中低温,盐度为3.89‰~10.48‰为中低盐度,这与典型的碳酸岩中流体包裹体具有相似的特征。通过与牦牛坪典型的岩浆热液脉型REE矿床在C-O同位素、包裹体及微量元素的对比研究,发现两者的成因机制并不相同,庙垭稀土矿床是典型的岩浆型,缺少萤石等热液矿脉,大量矿物的分离结晶,特别是方解石的堆积结晶作用,导致其方解石具有相对较低的均一温度和盐度,这也使碳酸岩岩浆更富集REE,有利于REE成矿。 
Keyword碳酸岩 C-o同位素 流体包裹体 稀土成矿 庙垭稀土矿床
Subject Area地球深部物质与流体作用地球化学
Indexed ByCSCD
Language中文
CSCD IDCSCD:4327436
Citation statistics
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6794
Collection地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文
Recommended Citation
GB/T 7714
吴敏,许成,王林均,等. 庙垭碳酸岩型稀土矿床成矿过程初探[J]. 矿物学报,2011(3):478-484.
APA 吴敏,许成,王林均,&宋文磊.(2011).庙垭碳酸岩型稀土矿床成矿过程初探.矿物学报(3),478-484.
MLA 吴敏,et al."庙垭碳酸岩型稀土矿床成矿过程初探".矿物学报 .3(2011):478-484.
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