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在新疆伊宁县阿希地区发现的大中型金矿床属于浅成低温热液金矿系统,赋存于晚古生代拉张环境下形成的吐拉苏火山盆地内,三级火山构造分别控制矿带、矿田和矿床.矿床围岩为下石炭统大哈拉军山组中酸性-酸性(偏碱性)陆相火山岩系,成矿时代为早石炭世杜内期,可分成冰长石-绢云母型和硅化岩型.在成矿时代、构造环境上有别于以前确认的浅成低温热液系统,对于扩大找矿领域,推进区域成矿学的研究均具一定意义.
The large and medium-sized gold deposits found in the Ashi area of Yining County, Xinjiang belong to the epithermal hydrothermal gold deposit system and occur in the Tulasu volcanic basin formed under the Late Paleozoic pull-out environment. The tertiary volcanic structures control the ore belts respectively, Orefields and deposits.The ore-bearing rocks are intermediate-acidic-alkaline (alkaline) terrestrial volcanic rocks in the Lower Carboniferous Dahalajunshan Formation, and the metallogenetic age is the Early Carboniferous Dunesian period, which can be divided into ice feldspar-silk Mica-type and silicified rock type.In the mineralization era, the tectonic environment is different from the previously recognized epithermal hydrothermal system, which is of great significance to the exploration of regional mineralization in the area of expanding prospecting.