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Ideal sources for Wikipedia's health content are defined in the guideline Wikipedia:Identifying reliable sources (medicine) and are typically review articles. Here are links to possibly useful sources of information about Iron(II,III) oxide. PubMed provides review articles from the past five years (limit to free review articles) The TRIP database provides clinical publications about evidence-based medicine. Other potential sources include: Centre for Reviews and Dissemination and CDC

The first equation in the preparation chapter is unbalanced/incorrect. —Preceding unsigned comment added by What do i want to... ( talk • contribs) 10:51, 25 November 2009 (UTC) reply

The structure of Fe3O4 is still unclear for me and I can not explain the complicated Mossbauer spectrum of Fe3O4. —Preceding unsigned comment added by 219.234.81.138 ( talk) 04:47, 2 October 2010 (UTC) reply

Why are there separate entries for these two materials when they are the same thing? — Preceding unsigned comment added by Dr. Work ( talk • contribs) 14:19, 7 May 2019 (UTC) reply