Word Study
vivianite
CIDE DICTIONARY
vivianite, n. [So called by Werner after the English mineralogist F. G. Vivian .].
A hydrous phosphate of iron of a blue to green color, growing darker on exposure. It occurs in monoclinic crystals, also fibrous, massive, and earthy. [1913 Webster]
For further exploring for "vivianite" in Webster Dictionary Online
