Iron nanoparticles can be found in black, and are soluble in the nano Fe-colloid that is formed by water. This metal has many applications, including high density magnetic recording material, electroconductive materials, and biomedical carriers. Puri…
Hematite is the most important ore of iron and it has been used by people as a pigment for at least 40,000 years. Learn about the uses and properties of the mineral hematite.…
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