四川省九龙县黑牛洞铜矿床地质地球化学特征及成矿机制探讨

黑牛洞铜矿床是里伍铜矿田找矿工作的一个重大突破。文章对矿区内主要含矿岩系主量元素和稀土元素进行了测试分析，研究认为，研究区内原岩为一套砂泥质碎屑岩夹基性火山岩的沉积建造；浸染状矿石的稀土配分模式与片岩的相一致，反应其成矿物质可能来源于原岩；脉状和块状矿石的稀土元素分异不明显，显示了硫化物的稀土元素特征。结合前人研究成果，初步提出了黑牛洞铜矿床的成矿机制。

Geological and geochemical characteristics and its ore-forming mechanism of Heiniudong copper deposit,Jiulong, Sichuan

Heiniudong copper deposit is a major breakthrough in ore-prospecting in Liwu copper field. This paper attempts to provide important reference information for the genesis study of the deposit by the study of major elements and rare earth elements of its ore-hosted rocks. Through the protolith restoration, we find the original rock is a set of arenopelitic clastic rock mingled with basic volcanic rocks. The REE pattern of disseminated ore is consistent with the schistous REE pattern, which indicate its minerals may be derived from the schist. While the differentiation of the rare earth elements in vein and massive ore is not apparent, which shows the characteristics of sulphide rare earth elements. This paper puts forward the metallogenic mechanism of Heiniudong copper deposit preliminarily combining with the research achievements of prede cessors.