1) Copper mineral 2) Phosphate mineral
Found on
https://www.crosswordclues.com/clue/volborthite
Volborthite is a mineral containing copper and vanadium, with the formula Cu3V2O7(OH)2·2H2O. Found originally in 1838 in the Urals, it was first named knaufite but was later changed to volborthite for Alexander von Volborth (1800–1876), a Russian paleontologist. Tangeite (synonym: calciovolborthite), CaCuVO4(OH), is closely related. ==Occurrenc...
Found on
http://en.wikipedia.org/wiki/Volborthite
• (n.) A mineral occurring in small six-sided tabular crystals of a green or yellow color. It is a hydrous vanadate of copper and lime.
Found on
http://thinkexist.com/dictionary/meaning/volborthite/
Vol'borth·ite noun [ So named after
Volborth , who first discovered it.]
(Min.) A mineral occurring in small six-sided tabular crystals of a green or yellow color. It is a hydrous vanadate of copper and lime.
Found on
http://www.encyclo.co.uk/webster/V/34
Volborthite, named after its discoverer, Volborth, Is a mineral occurring in small six-sided tabular crystals of a green or yellow colour. It is a hydrous vanadate of copper and lime.
Found on
http://www.probertencyclopaedia.com/browse/HV.HTM
No exact match found.
