3" Metallic, Needle-Like Pyrolusite Crystals - Morocco

This is a lustrous formation of radiating silver pyrolusite from Morocco. The specimen features several radiating sprays of shiny, metallic crystals in a red-brown, iron-rich matrix. There is an unknown feathery mineral on the matrix as well that adds to aesthetic appeal of the specimen.

Pyrolusite is a mineral composed of manganese dioxide (MnO2) and is an important ore of manganese. It has a silver, metallic luster, a black or bluish-black streak, and readily soils the fingers. This mineral is commonly found in finely packed fibrous, acicular, and radial forms composed of very fine needles or fibers.

Pyrolusites from the the Imini Mine in the Drâa-Tafilalet Region of Morocco are believed to be manganites replaced by pyrolusite. Therefore, a more accurate name for these specimens would be: Pyrolusite replaced Manganites.

Imini Mine, Ouarzazate Province, Morocco
3" wide rock