Spectacular sulfides from the Merelani tanzanite deposit, Lelatema Mountains, Manyara Region, Tanzania

Outstanding specimens of several sulfide minerals from the Merelani tanzanite deposit have recently become available, including rare wurtzite in giant, deep red-brown, partially gemmy, well-formed crystals, lustrous black alabandite and form-rich pyrite with exceptional luster. Other sulfides identified include sphalerite, chalcopyrite, millerite, stannite, tennantite-tetrahedrite, sharp microcrystals of clausthalite and rare colusite-germanocolusite