8.6" Botryoidal Goethite Formation - Congo
This beautiful botryoidal specimen of goethite is from the Democratic Republic of the Congo. This specimen stands up nicely on one edge without the need for a display stand.
Known since ancient times, Goethite is a beautiful dark gray to black iron-based mineral that can take many forms. It was used in antiquity as a pigment for painting and has even been found in the famous caves at Lascaux, France.