镍黄铁矿是一种由铁和镍构成的硫化物，分子式为(Fe,Ni)₉S₈，其中铁和镍的含量接近1:1，除此之外，它也含有微量的钴。镍黄铁矿的比重介于4.6 到5.0，而硬度再3.5和 4之间，是首先由爱尔兰科学家J·彭特蓝德(1797-1873)发现。

Pentlandite is an iron-nickel sulfide, (Fe,Ni)₉S₈. Pentlandite has a narrow variation range in Ni:Fe but it is usually described as having a Ni:Fe of 1:1. It also contains minor cobalt, usually at low wt% levels.

Pentlandite forms isometric crystals, but it is normally found in massive granular aggregates. It is brittle with a hardness of 3.5 - 4 and specific gravity of 4.6 - 5.0 and is non-magnetic. It has a yellowish bronze color.