1) Nickel mineral 
Népouite is a rare nickel silicate mineral which has the apple green colour typical of such compounds. It was named by E Glasser in 1907 after the place where it was first described (the type locality), the Népoui Mine, Népoui, Nouméa Commune, Northern Province, New Caledonia. The ideal formula is Ni{sub|3}(Si{sub|2}O{sub|5})(OH){sub|4}, but m...