This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Ozokerite. Mineral wax from the only commercial source in the world Glossy waxy very light in weight Four specimens Ozokerit Gre Glnzende Probe oben rechts ist Zoll entspricht mm breit Fundort Colton Utah County Utah USA mindat org html mindat org html John Krygier John Krygier Ozokerite Files by John Krygier from mindat