nimite
/ˈnɪmʌɪt/Mineralogy
noun
A basic monoclinic silicate, aluminate, and oxide of nickel, magnesium, iron, and aluminium (with nickel as the dominant cation) which belongs to the chlorite group and occurs as yellowish-green crystals near the Scotia talc mine in Mpumalanga province (formerly the eastern Transvaal), South Africa; (Ni,Mg,Fe,Al)3(Si,Al)2O5(OH)4.
Origin
1960s. From the initial letters of National Institute for Metallurgy (South Africa) + -ite.