Pink magnésite on quartz 
<dl><dd><dl><dd>Locality : Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil</dd>
<dd>Size : 9x3.5cm</dd></dl></dd></dl>
<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>