Mineral: Sphalerite, Dolomite
Locality: Mühlenbach Mine, Arenberg, Koblenz, Rhineland-Palatinate/Rheinland-Pfalz, Germany
Dimensions: 7,5 x 6,5 cm

Description: Although Mühlenbach was one of the last producing German mines it's rather unknown. The mine was part of the Bad Ems district. Mineral specimens from there are very rare, they hold kind of a holy grail status among local collectors.

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