Rosell Minerales

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RM2999   Pyrolusite and manganite

Gremmelsbach, Triberg im Schwarzwald, Freiburg, Baden-Württemberg, Germany

A novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.

Size: 8.8 x 7.4 x 5.2 cm.
Main crystal: 4.2 cm.
Found in 2021.

Analyzed specimen with report