Premier Olkusz Schalenblende: Rare Concentric Sphalerite & Marcasite with Silvery Galena

Olkusz Schalenblende Masterpiece: Polished Banded Sphalerite, Galena & Marcasite Slice

Size:  104 gram

Weight: 68mm x 30mm x 9mm

Origin:  Olkusz Mine, Southern Poland

Discover the geological marvels of the Olkusz region with this premier Schalenblende slice, a truly rare and visually captivating specimen. This exquisite piece features one meticulously polished side, revealing a dramatic display of concentric banding in varying shades of brown, grey, and cream. The distinct layers of sphalerite and marcasite are beautifully contrasted by shimmering inclusions of silvery galena, creating a dynamic visual appeal. The reverse side remains unpolished, offering a raw glimpse into its natural formation.

Schalenblende is a unique mineral aggregate, primarily composed of banded sphalerite, galena, and marcasite. Sphalerite, a zinc sulfide, forms the predominant concentric layers, with its varying colors often indicative of trace element impurities. Galena, a lead sulfide, typically appears as lustrous, metallic grey inclusions or disseminated grains, while marcasite, an iron sulfide, contributes to the intricate textures and occasionally forms radiating patterns.

This remarkable material forms through a process of rhythmic precipitation from low-temperature hydrothermal fluids within open cavities, often associated with karstic environments. As the mineral-rich solutions slowly deposit their contents, different minerals or varying concentrations of the same mineral precipitate in successive layers, leading to the characteristic banding. The Olkusz mines in Poland are globally renowned for producing some of the finest examples of Schalenblende, distinguished by their exceptional banding and mineral purity. The combination of its intricate structure, the presence of three distinct minerals, and its specific origin makes this a highly significant and relatively rare mineral specimen for collectors.

Don't miss this opportunity to acquire a premier piece of geological art. Add this rare Olkusz Schalenblende to your collection today!

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