哀牢山长安冲铜钼矿床地质特征及矿床成因探讨

Geological characteristics and genesis of Chang'anchong Cu-Mo deposit,Ailaoshan

长安冲铜钼矿床位于红河—哀牢山造山带南段,矿区主要发育灰质白云岩、灰岩地层,出露斑状石英二长岩岩体,主矿体分布于富碱性岩体(石英二长岩)与碳酸盐岩接触带上,并与夕卡岩相伴生。文章通过对区域研究成果的收集及矿区地质特征的调查研究,表明该矿床为斑岩型叠加夕卡岩型,并以夕卡岩型为主。矿区岩体出露较多,对斑岩型矿体的形成也提供了有利的成矿条件,即该区有一定的斑岩型矿床成矿潜力。

The Chang＇ anehong Cu-Mo deposit is located in the southern part of Red river - Ailao mountain orogenic belt, the main orebody is distributed in the contact zone of rich alkaline intrusion （ quartz monzonite） and carbonate rock. The main rocks out- cropped in the deposit area consist of calcite dolomite, limestone, and syenite porphyry. Based On integrated study of regional metallo- genic data collected and geological characteristics in the deposit area, it is concluded that the ore deposit genesis is porphyry type over- printed by-skarn type, and the skarn type is main metallogenic type. Considering intensive distribution of intrusions in the deposit area which is favorable for the formation of porphyry type orebody, thus there is potential for finding porphyry type orebody.