The chemical composition of mineral Crichtonite is indicated by the formula (Sr,La,Ce,Y)(Ti,Fe+++,Mn)21O38. This mineral is commonly found occurring in alpine-type fissure veins. Crichtonite is most commonly found from its type of locality at St. Christopher, Bourg d’Oisans, Isere, France. Crichtonite was named for Sir Alexander A. Crichton (1763-1856), Scottish physician and mineral collector. Mineral Crichtonite […]

The chemical composition of mineral Campigliaite is inidcated by the formula Cu4Mn(SO4)2(OH)6•4(H2O). Mineral Campigliaite is known as a secondary mineral in the oxidized zone of a metallic sulfide skarn deposit. This mineral is usually found from its type of locality at Temperino mine, Campiglia Marittima, Tuscany, Italy. Mineral Campigliaite was named for the locality. Mineral […]