article_snippet: Magnetite is an iron (III) oxide mineral that forms smooth black crystals, like those shown above, in rock.
article_snippet: the magnetite itself will only hold a maximum number of electrons, which is one of the limiting factors. '
article_snippet: These were grown on nano-sized crystals of magnetite - an iron oxide based mineral found in rock formations that was used to make lodestones.
article_snippet: The researchers also believe the findings could also be used to help clear up toxic metal pollution, using bacteria coated magnetite to convert the metal into safer forms.
article_snippet: There has been considerable recent work on using magnetite to clean up toxic metals. '
article_snippet: For example, magnetite can reduce the toxic form of chromium, chromium VI, to the less toxic chromium (III), which can then be incorporated into a magnetite crystal. '
article_snippet: The fact that the less toxic chromium (III), which can then be incorporated into a magnetite crystal may then be exposed to these reducing bacteria could potentially enhance the less toxic chromium (III), which can then be incorporated into a magnetite crystal remediation capacity. '