atomic number 28
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|Noun||1.||atomic number 28 - a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite|
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
garnierite - a green mineral consisting of hydrated nickel magnesium silicate; a source of nickel
millerite - a yellow mineral consisting of nickel sulfide; a minor source of nickel
pentlandite - a mineral (iron and nickel sulphide) that is the chief ore of nickel
smaltite - a grey mineral consisting of cobalt arsenide and nickel; an important source of cobalt and nickel
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