A solid solution series occurs when two or more structurally identical minerals can interchange elements within their chemistries without dramatically altering the crystal structure. In the case of conichalcite and calciovolborthite the two elements are arsenic and vanadium. Conichalcite is the arsenic rich end member of the series and calciovolborthite is the vanadium rich end member. Color is typically various shades of green. Luster is vitreous, pearly or dull.
Specimens are transparent to opaque.
Crystal Habit is typically in druzy crusts and masses. Cleavage is none. Fracture is uneven. Hardness is 3 to 4. Streak is pale green to gray.