新疆铝土矿成矿条件分析

MINERALIZATION CONDITIONS OF BAUXITE DEPOSITS IN XINJIANG

新疆近年发现的铝土矿有乌什县北山铝土矿、乌恰县乔克莫克铝土矿,矿床和矿化点主要分布在新疆西南天山。新疆铝土矿的发现既解决资源分布不均匀的问题,又可利用当地煤电充足的优势,拉动电解铝产业。作者总结了新疆铝土矿成矿条件和典型矿床的成矿系统,指出其物质来源并不像其他矿床那样重要和突出,不论何种岩石,只要环境条件有利,均可形成铝土矿。古地理环境对成矿起着重要的控制作用,西南天山铝土矿为产于石炭纪灰岩的古风化壳侵蚀面上的碎屑沉积矿床。

Bauxite deposits have been recently discovered in south-western Tianshan, such as Beishan bauxite deposit in Wushi county, Qiaokemoke bauxite deposit in Wuqia county. The discovery not only is helpful to resolve the uneven distribution of mineral resources, and but also stimulate the electrolysis aluminum industry based on the sufficient local coal and power. This paper summarizes the metallogenetic system of bauxite deposits and mineralization conditions, presents that bauxite deposits can be formed, regardless of rock types, under a favorable environment. The paleogeography plays a key role in the formation of bauxite deposits. The bauxite deposits in the south-western Tianshan are the Carboniferous elastic sedimentary deposits on the paleo-weathered crust.