铁镍磁铁矿在我国兴隆首次发现,产于蛇纹石化镁质超基性岩中。主要含镍矿物为镍磁铁矿,电子探针测定含镍高达11.4％,相当于含NiO14.5％;与南非(阿扎尼亚)巴伯顿的铁镍磁铁矿含NiO16.6％相近。铁镍磁铁矿系镍代换磁铁矿中的低价铁而成。这种含铁镍磁铁矿的内生氧化镍型矿床,在国内是一新的类型。 Iron-nickel magnetite was first discovered in Xinglong, China, produced in serpentinite magmatic ultrabasic rocks. The main nickel-containing minerals are nickel magnetite. Electron probe determination of nickel up to 11.4%, equivalent to containing NiO14.5%; and South Africa (阿扎尼亚) Barberton’s iron-nickel magnetite containing NiO16.6% similar. Nickel-nickel magnetite nickel-substituted magnetite in the cheap iron made. This type of nickel-bearing nickel-bearing magnetite ore deposits in the country is a new type.