Category Nuances for iron_sulfide:

• conductive,
• single,
• suspended,
• calcareous,
• deleterious,
• fine,
• inorganic,
• reactive,
• particulate,
• new,
• corrosive,
• organic,
• iron,
• expensive,
• metal,
• solid,
• secondary,
• wet,
• undesirable,

Simple Categories for iron_sulfide:

• rock,
• particle,
• mineral,
• substance,
• compound,
• matter,
• deposit,
• particulate,
• solid,
• sulfide,