Vulcanite is named after the place where it was discovered in 1961 the Mammoth Good Hope Mine in Vulcan (ghost town and district) Gunnison County Colorado US.
Onyx comes through Latin (of the same spelling) from the Greek ὄνυξ meaning 'claw' or 'fingernail'.
The only ores of chromium are the minerals chromite and magnesiochromite.
Veatchite was discovered in 1938 at the Sterling Borax mine in Tick Canyon Los Angeles County California and named in honor John Veatch the first person to detect boron in the mineral waters of California.
The name omphacite derives from the Greek ‘omphax’, which means 'unripe grape’ in refrence to the mineral’s typical green color.
Zirkelite was first discovered in Brazil in 1895 and was named for German petrographer Ferdinand Zirkel.
Uchucchacuaite was first described in 1984 for an occurrence in the Uchucchacua Mine, Oyon Province, Lima Department, Peru and named for the mine.
Tetrahedrite gets its name from its unusual tetrahedral crystal shape.
Parsonsite was first described in 1923 for an occurrence in the Shinkolobwe mine, Katanga Copper Crescent, Democratic Republic of Congo, and was named for mineralogist Arthur Leonard Parsons of the University of Toronto, Canada.