新疆阿尔泰地区阿舍勒型块状硫化物矿床地质条件分析

GEOLOGICAL CONDITION ANALYSIS OF ASHELEI MASSIVE COPPER ZINK SULFIDE ORE DEPOSIT IN ALTAI AREA,XINJIANG

本文通过对新疆阿舍勒块状铜锌硫化物矿床的解剖,分析了苏、中、蒙阿尔泰成矿带中国境内寻找阿舍勒型矿床的条件,在此基础上指出了找矿方向。

Ashelei massive copper zinc sulfide deposit is a large—sized volcanogenic deposit firstly discovered in Altai area. It occurs in Altai tectonic—metallogenie zone. Its host rocks are dacitie pyroclastic rocks and volcaniclastic—sedimentary rocks of Ashelei group of Middle Devonian. This deposit is intimately related to subvolcanic rocks. This deposit occurs in late stage of volcano—sedimentary cycle or between two volcano—sedimentary cycles. It is controlled by faults and volcanic apparats, and reformed by late—tectogeneses. Besides, these ores are enriched by supergenesis. Altai tectonic—metallogenic zone has geotectionic, geochemical and geophysical conditions for forming Ashelei—type deposits, and has perspectives for looking for the type of deposits. On the basis of studying Ashelei massive sulfide deposit, prospects of ore deposits are indicated in Altai area.