河南省罗山县陡坡钼矿床地质特征及成因

Geological Features and Genesis for the Doupo Mo Deposit in Luoshan,Henan

陡坡钼矿床位于大别山北麓,赋存于早白垩世灵山超单元岩体与围岩的内接触带中及灵山岩体中。在岩浆上侵、分异过程中,岩浆的高温气液使岩体发生自变质,出现星散状辉钼矿,在岩浆期后温热液丰富的SiO2、K2O等沿节理、裂隙产生了强烈的交代作用,它促使分散在造岩矿物中的钼活化转移至热液中,在物质成分发生反应、交换后,钼再次以细脉、网脉状得到富集。随着岩浆的冷凝固结,导致熔体和富水热液流的分离。矿体主要分布在岩石裂隙及不同方向纵横交错的石英细网脉中。

The Doupo Mo deposit lies in the northern piedmont of the Dabie Mountains and is confined to the Lingshan intrusion and its endocontact. Disseminated molybdenite mineralization occurred during magmatic intrusion and differentiation, while veinlet and net-veined molybdenite mineralization took place in postmagmatic hydrothermal stage.