Pyrite is more abundant and cobaltiferous and occurs in heavy patches in the sulfide mass.

黄铁很多，并且含钴，在硫化物块体中成稠密的斑块。

Primary violarite has comparatively big particle size,and it is considered the easiest flotation copper-niekle-sulphide ore.

紫硫镍铁较大,被认为是最易浮选的硫化铜镍物。

While the reduction of the initial oxidized products on pyrite surface such as polysulphide and free sulphur can improve its hydrophilicity.

同时，黄铁表面初始氧化产物如单质硫和多硫化物被还，亲水性增强。