“ Unusual Tennantite groups of crystals with metallic-grey colour, up to 2 mm in size and sprinkled by pale brass-yellow pyrite well arranged on colourless Quartz. Also minor Chalcopyrite crystals in association. Great specimen from Certej area. NP Collection and photograph.”

“ Unusual Tennantite groups of crystals with metallic-grey colour, up to 2 mm in size and sprinkled by pale brass-yellow pyrite well arranged on colourless Quartz. Also minor Chalcopyrite crystals in association. Great specimen from Certej area. NP Collection and photograph.”

“ Unusual Tennantite groups of crystals with metallic-grey colour, up to 2 mm in size and sprinkled by pale brass-yellow pyrite well arranged on colourless Quartz. Also minor Chalcopyrite crystals in association. Great specimen from Certej area. NP Collection and photograph.”