A slice of the <a href="https://en.wikipedia.org/wiki/Esquel_(meteorite)" class="extiw" title="w:Esquel (meteorite)">Esquel meteorite</a>. This type of meteorite is from the core-mantle boundary of an ancient planetoid that was smacked apart billions of years ago. The metal is iron/nickel core material and the crystals are <a href="https://en.wikipedia.org/wiki/peridot" class="extiw" title="w:peridot">peridot</a> from the mantle area. At the interface, they mix together as you can see. This piece is from my collection.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/16533652@N00">Doug Bowman</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/16533652@N00/2563439">Esquel</a>