David K. Joyce

Ferberite, Arsonopyrite

7.6x5.6x3.5 cm
Panasqueira Mine

Ferberite, ArsonopyriteFerberite, ArsonopyriteFerberite, Arsonopyrite

Item number: 27894

This plate of sharp arsenopyrite crystals has several, black, disc-like ferberite crystals on it in two places on the top. The crystals are composed of sharp faces. The whole specimen seems to have a slight coating of chalcopyrite or similar mineral which gives the arsenopyrite crystals a marcasite-like look. They are arsenopyrite, though! Looks great! Nice example!