赵泓一,邓明国,沙建泽,陈伟,贾祯

• 1:昆明理工大学国土资源工程学院
• 2:云南省地质调查院
• 3:自然资源部三江成矿作用及资源利用重点实验室
• 4:滇西应用技术大学

摘要(Abstract)：

叫鸡冠铁多金属矿床位于滇西腾冲县中缅边境附近，矿床规模可达大(中)型。矿体主要以似层状、透镜状产于二叠系空树河组。为明确矿床成矿流体、成矿物质的来源及演化，对不同阶段的岩石样品进行C-O-S同位素研究。结果显示，叫鸡冠矿床热液方解石的δ~(13)C_(V-PDB)变化范围为-8.54‰～-5.13‰;δ~(18)O_(V-SNOW)值变化范围为5.74‰～9.83‰,表明矿床成矿流体主要来源于深部岩浆热液，在迁移成矿过程中可能受到了沉积岩混染和水岩反应的影响；硫化物δ~(34)S_(CDT)值变化范围为2.91‰～5.65‰,指示硫源主要为深部岩浆硫。综合大地构造背景和矿床地质特征，该矿床为碰撞及碰撞后伸展的大地构造背景下，与燕山期岩浆作用有关的矽卡岩型矿床。

关键词(KeyWords)： 腾冲地块;矽卡岩型矿床;铁多金属矿床;C-O同位素;S同位素;成矿流体;成矿物质

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目“滇西芦子园铅锌矿床构造-流体与成矿关系研究”(41363001);“滇西勐兴铅锌矿床矿化时空结构与成矿模型研究”(41762009)

作者(Author): 赵泓一,邓明国,沙建泽,陈伟,贾祯

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