Metallic mineral, NiAs; sp. gr. 7.8; hardness 5.0; greyish-red; usually massive or disseminated; occurs as irregular aggregates and as complex intergrowths with other sulphides, associated with basic igneous rocks.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。