Category Nuances for pyrrhotite:

• primary,
• magnetic,
• common,
• ferromagnetic,
• ferrous,
• corrosive,
• metallic,
• refractory,
• deleterious,
• opaque,
• iron,
• sensitive,
• conductive,
• reactive,

Simple Categories for pyrrhotite:

• solid,
• mineral,
• particle,
• rock,
• material,