CJ18- Ferberite with Marcasite. Panasqueira mine, Aldeia de São Francisco de Assis, Covilhã, Portugal.
Group of twinned (this twin is known in German as “sperkise”) crystals of Marcasite, sharp, very well defined and bright. The Marcasite crystals are disposed on two bright crystals of Ferberite in parallel growth with very well defined faces and edges. Nice classic Panasqueira specimen in very good condition.
Specimen size: 5 cm x 2.5 cm