在甘肃金川铜镍硫化物矿床西侧外围实施JCSD钻探项目的过程中,发现4段磁铁矿化层,主要出现在斜长角闪岩和混合岩中。磁铁矿所赋存的斜长角闪岩经原岩恢复为沉积岩和火山岩两大类,表明铁元素的来源与(陆源,火山碎屑)沉积作用密切相关,进而说明磁铁矿属沉积变质型,成矿物质主要来自陆源沉积岩和火山岩中,而后期的区域变质作用和混合岩化作用是主要的成矿作用。 During the JCSD drilling project on the western periphery of the Jinchuan copper-nickel-sulfide deposit in Gansu, four magnetite layers were discovered, mainly in amphibolite and migmatite. The plagioclase amphiboles hosted by magnetite are recovered into two major types of sedimentary rocks and volcanic rocks, indicating that the source of iron is closely related to the deposition of (terrigenous and volcanic debris), indicating the depositional metamorphism of magnetite Type, the metallogenic material mainly comes from the terrigenous sedimentary rocks and volcanic rocks, and the later regional metamorphism and migmatization are the main mineralization.