Wiktionary
renierite
n. (context mineralogy English) A tetragonal-scalenohedral orange brown mineral containing arsenic, copper, germanium, iron, sulfur, and zinc.
Wikipedia
Renierite
Renierite, (Cu,Zn)(Ge,As)FeS is a rare copper zinc germanium bearing sulfide mineral. It occurs at the Kipushi Mine, Democratic Republic of the Congo; and Namibia, among other places.
Renierite was named after Armand Renier (26 June 1876 - 9 October 1951), a Belgian geologist and Director of the Belgian Geological Survey.