We follow [Nina] through this voyage of discovery in a Mastodon thread, as she tries first iron filings, the rust, and finally pure samples of the two iron oxides Fe3O4 and Fe2O3. She eventually ...
Purity levels were also notable: with samples yielding as low as 0.25% Fe2O3, a figure significantly less than the industry specifications for concentrate of <1.3% Fe2O3. The next steps for the ...