<a href="https://en.wikipedia.org/wiki/Dolomite" class="extiw" title="w:Dolomite">Dolomite</a> and <a href="https://en.wikipedia.org/wiki/magnesite" class="extiw" title="en:magnesite">magnesite</a>
<dd>Locality : Azcárate Quarry, Eugui, Esteribar, Navarre, Spain</dd>
<dd>Size : 10.2x6.7cm.</dd>
<a href="//commons.wikimedia.org/wiki/User:Archaeodontosaurus" title="User:Archaeodontosaurus">Didier Descouens</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>