crednerite
noun
cred·ner·ite
ˈkrednəˌrīt
plural -s
: a grayish to black foliated mineral CuMn2O4 consisting of copper, manganese, and oxygen
Word History
Etymology
German crednerit, from K. F. Heinrich Credner †1876 German geologist + German -it -ite
First Known Use
1849, in the meaning defined above