Siderite

 Cabeza Do Cachorro Mine, Floresta Amazonica, Amazonas, Brazil, South America Very fine crystal specimen of Ludlamite from a new batch we received from Cabeça do Cachorro Claim,...

 Panasqueira Mine, Covilha, Castelo Branco District, Portugal, Europe Seven well-terminated crystals of jet-black Ferberite, in tabular blades to 4.8 x 3.3 x 0.4 cm form...

 Churprinz Friedrich August Erbstolln Mine (Churprinz Mine; Kurprinz Mine), Großschirma, Freiberg District, Erzgebirge, Saxony, Germany A superb and all-around showy specimen of cuboctahedral Galena crystals of metallic grey covering a...

 Pribram, Bohemia, Czech Republic, Europe A single well formed bright metallic silver-grey tabular crystal of Bournonite sits on edge in a...