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 grass green to light green. Luster is vitreous.
Crystals are transparent to translucent.
Crystal System is orthorhombic Crystal Habits include the crusts of acicular to almost fibrous crystals. Also as botryoidal masses and compact crusts. Cleavage is absent. Fracture is uneven. Streak is green.