Piemontite 
<dl><dd><dl><dd>Locality : Deposite topotype - Prabornaz Mine (ex Praborna Mine), Saint-Marcel, Aosta Valley, Italy</dd>
<dd>Size : (5 × 4.5 cm)</dd></dl></dd></dl>
<a href="//commons.wikimedia.org/wiki/User:Archaeodontosaurus" title="User:Archaeodontosaurus">Didier Descouens</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>