Iron sulfides like pyrrhotite, pentlandite, troilite and cubanite do occur, but elemental iron is absent.

Toxic effects begin to occur at doses above 10-20 mg/kg of elemental iron.

Ingestions of more than 50 mg/kg of elemental iron are associated with severe toxicity.

Then he morphed his right hand into a ten-centimeter cube of elemental iron and thrust it forward as fast as his nerve impulses could travel.

If he knows there is iron, does he know if it is elemental iron or iron oxide?

The products are aluminium oxide, free elemental iron, and a large amount of heat.

Children may show signs of toxicity with ingestions of 10-20 mg/kg of elemental iron.

Jones has argued that the molten metal may have been elemental iron, a product of a thermite reaction.

If you don't have iron deficiency, don't take more than 45 mg per day of elemental iron per day.

The effectiveness and side effects are similar for these different forms when used in equal doses of elemental iron.