Fine specimen that shows aggregates of tabular crystals of baryte, with a slight yellowish tone, transparent to translucent, brilliant and with defined faces and edges. Accompanied by several marcasite crystals showing various twins, such as "cockscomb", as aggregates or very aesthetic individual crystals. On a quartz matrix.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.