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Garnierite is a general name for a green nickel ore which is found in pockets and veins within weathered and serpentinized ultramafic rocks. It forms by lateritic weathering of ultramafic rocks and occurs in many nickel laterite deposits in the world.
It contains generally 1.5–2.5% nickel and consists largely of Mg-depleted serpentine in which nickel is incorporated. In pockets and fissures of the serpentinite rock green garnierite can be present in minor quantities, but with high nickel contents – mostly 20
Pentlandite in pyrrhotite, ore specimen from the Sudbury Basin (field of view 3.4 cm). Pentlandite is an iron–nickel sulfide with the chemical formula (Fe,Ni) 9 S 8.Pentlandite has a narrow variation range in nickel to iron ratios (Ni:Fe), but it is usually described as 1:1.
Oxides include laterite, where the principal mineral mixtures are nickeliferous limonite, (Fe,Ni)O(OH), and garnierite (a mixture of various hydrous nickel and nickel-rich silicates). [36] Nickel sulfides commonly exist as solid solutions with iron in minerals such as pentlandite and pyrrhotite with the formula Fe 9-x Ni x S 8 and Fe 7-x Ni x S ...
Falcondoite is frequently associated with sepiolite, garnierite, talc, and serpentine, and is commonly nickel-bearing. While the chemical formula for falcondoite can vary, the mineral must contain more nickel than magnesium to be considered its own species. [4] The ideal chemical formula for falcondoite is (Ni,Mg) 4 Si 6 O 15 (OH) 2 ·6H 2 O. [2]
Garnierite is a green nickel ore that formed as a result of weathering of ultramafic rocks, and that occurs in many nickel deposits worldwide. It is a mixture of various nickel and magnesium phyllosilicates (sheet silicates), including népouite.
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Until 1866 he traveled the island and discovered a new green nickel ore, having a large weight percent of nickel oxide, [4] which was named garnierite in his honor by his peers. [5] [6] [7] This discovery was formalized at the Paris Academy of Sciences in 1876. He also undertook missions in Canada . He received the Legion of Honor at the age of ...