Zaratite is a bright emerald green and questionable nickel carbonate mineral with formula Ni3CO3(OH)4·4H2O. Zaratite crystallizes in the isometric crystal system as massive to mammillary encrustations and vein fillings. It has a specific gravity of 2.6 and a Mohs hardness of 3 to 3.5. It has no cleavage and is brittle to conchoidal fracture. The ... Found on http://en.wikipedia.org/wiki/Zaratite
Zar'a·tite noun (Min.) [ Named after Gen. Zarata of Spain.] A hydrous carbonate of nickel occurring as an emerald-green incrustation on chromite; -- called also emerald nickel . Found on http://www.encyclo.co.uk/webster/Z/1
Zaratite (emerald nickel), named after General Zarata of Spain, is a hydrous carbonate of nickel occurring as an emerald-green incrustation on chromite. Found on http://www.probertencyclopaedia.com/browse/HZ.HTM