河北省安妥岭斑岩型钼矿床围岩蚀变特征

文章从安妥岭斑岩型钼矿床的地质、蚀变特征及蚀变分带研究入手,认为硅化和钾长石化岩石的钼含矿性最强,硅化和钾长石化与钼成矿关系密切.蚀变类型有:硅化、钾化、绢云母化、青磐岩化（绿泥石-绿帘石-碳酸盐化）、水黑云母化、黄铁矿化等,各种类型互相过渡,互相迭加,呈现了多期多阶段的蚀变特征.研究表明,围岩蚀变始终伴随着钼成矿作用...

Surrounding rock altered characteristics of Antuoling porphyry Mo deposit, Hebei Province

Based on the geological,alteration,alteration zoning characteristics of the Antuoling porphyry Mo deposit,it is considered that the molybdenum ores occurs in silicification and k-feldspar rocks.The alteration types include silicification,k-feldspar,sericite,（chorite,epidotization,carbonation）,hydromicazation,pyritization,etc.,they are transition each other,superposition each other,showing the characteristics of multi-stage alteration,The results show that surrounding rock alteration associated with molybdenum mineralization at every stage in different metallogenic periods and metallogenic stages,different surrounding rocks,altered types.The deposit shows obvious altered zoning,from rock bodies center to the outside,silicification-k-feld spar（strong alteration zone）,silicification-sericitization zone,sericite（silicification）zone and silicification –pyriteization zone（weak alteration zone）.the intensity decreased gradually from the center to the periphery.The alteration corresponds to the grade level of molybdenum ore bodies.The study shows that silicification and k-feldspar should be the most effective prospecting criteria.