Siegenite, Chalcopyrite, Dolomite
Sweetwater Mine, Ellington, Reynolds County, Missouri, USA
One of the notable specimens from the Silvane Collection. From a classic locality for the species, very sharp octahedral Siegenite crystals with a more than considerable size on a very attractive and Dolomite-rich matrix with small twinned Chalcopyrite crystals. An extraordinary specimen.
Milliken (Sweetwater) Mine, S. Orebody, Ellington, ...
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