argyrodite
noun
ar·gyr·o·dite
plural -s
: a steel-gray mineral Ag8GeS6 consisting of silver, germanium, and sulfur
Word History
Etymology
International Scientific Vocabulary argyrod- (from Greek argyrōdēs rich in silver, from argyros silver + -ōdēs -ode) + ite; originally formed as German argyrodit