Definition of garnierite in English:



  • [mass noun] A bright green amorphous mineral consisting of a hydrated silicate of nickel and magnesium.

    • ‘Nickel is found in many ores as sulfides, arsenides, antimonides & oxides or silicates; chief sources include chalcopyrite; others are pyrrhotite, pentlandite, garnierite, niccolite, millerite.’
    • ‘It still contains the largest reserves of rich nickel ore (garnierite) in New Caledonia.’
    • ‘Nickel is obtained from two main types of deposits: from the mineral garnierite (Ni-silicate) in nickel-rich laterite formed by weathering of ultramafic rocks in tropical climates.’
    • ‘In some locations they may form major deposits, as in the case of garnierite, a major nickel ore.’
    • ‘Nickel comes from the minerals pyrrhotite, pentlandite and garnierite.’
    • ‘The nickel-containing ore to be used for the preparation of the catalyst according to this invention includes silicate type nickel oxide ore with high silica and magnesia contents usually referred to as garnierite and iron oxide type nickel oxide ore with a high iron content usually referred to as laterite.’
    • ‘The most common ores of nickel are pentlandite, pyrrhotite, and garnierite.’


1875: named after Jules Garnier (1839–1904), French geologist.