30091 Sphalerite, Quartz, Nikolaevskiy Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia May 1, 2020 Steve Europe Russia Complex black sphalerite with orange coated quartz crystals. Video best viewed full screen.
Europe France 4568 Pharmacosiderite, Quartz, Le Mazet vein, Echassieres, Ebreuil, Allier, Auvergne, France October 5, 2019