ˈvälˌbȯrˌthīt noun
( -s )
Etymology: French volborthite, from Alexander von Volborth died 1876 Russian paleontologist + French -ite
: a mineral Cu 3 (VO 4 ) 2 .3H 2 O consisting of a hydrous vanadate of copper and occurring in small green or yellow 6-sided tabular crystals or in globular forms