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Anglesite. (w. Galena and Mimetite-M)


Chemistry: PbSO4
Size: 62 mm
Owner: Mariusz Oleszczuk
Photographer: Mariusz Oleszczuk

A large crystal of yellow anglesite, attached to a stalactite-like, cylindrical aggregate of galena and mimetite (XRD verified).

This specimen is of particular interest because the mimetite crystals belong to the monoclinic polytype mimetite-M (formerly afforded species status as clinomimetite).  

Mimetite-M from this specimen has been verified by both XRD and Raman analysis.