Bill Minarik<p>A mantle xenolith (dunite) infiltrated by mafic melt on the left side. The melt has crystallized clinopyroxene, as shown by this electron backscattered diffraction image. Each pixel's data is a diffraction pattern that can determine mineral type and crystallographic orientation.</p><p><a href="https://fosstodon.org/tags/ThinSectionThursday" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ThinSectionThursday</span></a> <a href="https://fosstodon.org/tags/Mineralogy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mineralogy</span></a> <a href="https://fosstodon.org/tags/EBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>EBSD</span></a> <a href="https://fosstodon.org/tags/Xenolith" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Xenolith</span></a> <a href="https://fosstodon.org/tags/Mantle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mantle</span></a></p>