This is a superb miniature featuring a wonderful adamite flower in the center of a brown gossan matrix. The colour is stong and intense, and the overall impact is just marvellous!

A manganiferous variety of Adamite.

Formula: Zn2(AsO4)(OH)
System: Orthorhombic
Hardness: 3½

From: Ojuela Mine, Mapimi, Mun. de Mapimi, Durango, Mexico
Credit: Anton Watzl