Berzelianite, Calcite
Skrikerum Mine, Valdemarsvik, Östergötland County, Sweden
8.5 x 8.2 x 4.6 cm. Berzelianite is a rare copper selenide and this old-time specimen is from the Type Locality in Sweden. Lustrous, slate-black berzelianite microcrystals are richly included as nifty phantoms in the blocky calcite embedded in matrix. Outstanding, rich and rarely available. It was collected in 1853. The species was discovered in ...
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