Robuta

https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/tetrahedrite tetrahedrite | Encyclopedia.com tetrahedrite An end-member of the tetrahedrite series from tetrahedrite (Cu,Fe)12Sb4S13 to tennantite (Cu,Fe)12As4S13; if sliver is present in quantity (up to... tetrahedriteencyclopedia https://museumcollections.udel.edu/Documents/Detail/tetrahedrite-on-chalcopyrite/215320 TETRAHEDRITE on CHALCOPYRITE - University of Delaware Museums university of delawaretetrahedritechalcopyritemuseums https://impact.ornl.gov/en/publications/first-principles-studies-of-atomic-dynamics-in-tetrahedrite-therm/ First-principles studies of atomic dynamics in tetrahedrite thermoelectrics - Oak Ridge National... first principles