This sample of cafarsite is displayed in the Smithsonian Museum of Natural History. Cafarsite contains titanium, arsenic and manganese with the composition (Ca,Mn)₈(Ti,Fe)_6.5(AsO₃)₁₂.2H₂O. The sample at left is about 15 cm across and is from Pizzo Cervandone, Novara, Piemonte, Italy.