False-colored SEM image of pyrite cuboctahedral crystals and pyrrhotite. This grain was extracted from Vishnevogorsk deposit carbonatites by dissolving samples in hydrochloric acid. Minerals were identified by SEM EDS.
<a href="//commons.wikimedia.org/wiki/User:Boris_Lobastov" title="User:Boris Lobastov">Boris Lobastov</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>