Wolf, Ron2025-05-292025-05-29https://hdl.handle.net/11124/180704Photographed by Ron Wolf.Black tetrahedrite with fine yellow coating.born digitaldigital photographsCopyright Ron Wolf.In copyright - non-commercial use permitted: http://rightsstatements.org/vocab/InC-NC/1.0/mineral and rock specimenstetrahedriteMinerals -- Colorado -- Gilpin CountyImage