陈榜巧,梁斌,郝雪峰,唐屹,潘蒙,彭宇

• 1:西南科技大学环境与资源学院
• 2:四川省地质调查院

摘要(Abstract)：

四川西昌地区的米市中生代陆相盆地位于扬子地台西缘。最近在盆地内下白垩统飞天山组(K_1f)中发现了与砂岩型铜矿伴生的铼。铜铼矿体赋存于飞天山组碎裂状、透镜状砂岩中，矿石中见有大量细脉状沥青分布。为探讨米市盆地砂岩型铜铼矿床(点)中有机质(沥青)对铜铼成矿的作用，对矿床(点)中矿石及沥青进行了矿相学、显微结构、红外光谱及有机碳同位素组成的研究。结果表明：铜矿物呈它形粒状分布于沥青之中，与之形成交代结构；沥青具有较高的Cu、Re含量；沥青是由下伏三叠系白果湾组中的古油藏发生热裂解形成的，证实了铜铼矿床的形成与古油藏有机质具有密切的空间和成因关系。该类型矿床的发现，为铼等分散元素超常富集成矿研究提供了新的对象。

关键词(KeyWords)： 砂岩型铜铼矿;稀散金属;有机质;沥青;超常富集;米市盆地

Abstract:

Keywords:

基金项目(Foundation): 四川省自然资源厅2020年省政府性投资地质勘查(第一批)项目(DZ202006);; 国家重点研发计划(2017YFC0602702)

作者(Author): 陈榜巧,梁斌,郝雪峰,唐屹,潘蒙,彭宇

DOI: 10.19509/j.cnki.dzkq.2022.0175

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