英文名称nigrin 含铁高的金红石变种。呈暗褐至黑色，不透明，具半金属－金属光泽。其著名产地是美国宾夕法尼亚州。可用作宝石。
本文以纯铌铁金红石矿物为研究对象，介绍并比较几种捕收剂对其捕收效果的影响。
Effects of several collectors on pure ilmenorutile were studied and compared in this paper.
铁及锌的掺杂会降低锐钛晶向金红石的转变温度。
Iron and zinc doping can lower the transformation temperature of anatase to rutile.
实践证明，采用金红石铝热法生产高钛铁在技术上是完全可行的。
The practice shows that smelting high grade ferrotitanium with rutile by thermite method is feasible.
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