新疆镁铁-超镁铁质岩分布广泛,是我国铜镍矿床的主要产地之一,占全国探明镍储量的13·8%,占新增镍储量的90%以上。东天山成矿带是中亚造山带的重要组成部分,也是世界上典型的增生型造山带,早二叠世后碰撞驰张构造阶段,大量镁铁-超镁铁岩沿深大断裂带上侵,形成了一系列岩浆铜镍 Xinjiang mafic-ultramafic rocks are widely distributed and are one of the main producing areas of copper-nickel deposits in China, accounting for 13.8% of the national proved nickel reserves and accounting for more than 90% of the newly-added nickel reserves. The East Tianshan metallogenic belt is an important part of the Central Asian orogenic belt and is also a typical overgrown orogenic belt in the world. After the Early Permian collision and relaxation structure, a large number of mafic-ultramafic rocks along the deep fault zone Intrusion, formed a series of magmatic copper and nickel