![set of various dark unpolished stones with names (magnetite, basalt, molybdenite, obsidian, sphalerite, perovskite, hematite, chromite, aegirine, shun Stock Photo - Alamy set of various dark unpolished stones with names (magnetite, basalt, molybdenite, obsidian, sphalerite, perovskite, hematite, chromite, aegirine, shun Stock Photo - Alamy](https://c8.alamy.com/comp/2DB3E4E/set-of-various-dark-unpolished-stones-with-names-magnetite-basalt-molybdenite-obsidian-sphalerite-perovskite-hematite-chromite-aegirine-shun-2DB3E4E.jpg)
set of various dark unpolished stones with names (magnetite, basalt, molybdenite, obsidian, sphalerite, perovskite, hematite, chromite, aegirine, shun Stock Photo - Alamy
![Mechanism and kinetics of magnetite oxidation under hydrothermal conditions - RSC Advances (RSC Publishing) DOI:10.1039/C9RA03234G Mechanism and kinetics of magnetite oxidation under hydrothermal conditions - RSC Advances (RSC Publishing) DOI:10.1039/C9RA03234G](https://pubs.rsc.org/image/article/2019/RA/c9ra03234g/c9ra03234g-f1_hi-res.gif)
Mechanism and kinetics of magnetite oxidation under hydrothermal conditions - RSC Advances (RSC Publishing) DOI:10.1039/C9RA03234G
![set of various dark gemstones with names (magnesite, hematite, obsidian, magnetite, hornblende, shungite, , onyx, flint, diorite, chromite, anthophyll Stock Photo - Alamy set of various dark gemstones with names (magnesite, hematite, obsidian, magnetite, hornblende, shungite, , onyx, flint, diorite, chromite, anthophyll Stock Photo - Alamy](https://c8.alamy.com/comp/2C31N38/set-of-various-dark-gemstones-with-names-magnesite-hematite-obsidian-magnetite-hornblende-shungite-onyx-flint-diorite-chromite-anthophyll-2C31N38.jpg)