Today's featured picture

Nickel

Electrolytically refined pure (99.9%) nodules and a 1 cm3 cube of nickel, a silvery-white lustrous transition metal with a slight golden tinge. The nodules have visible green, crystallized nickel-electrolyte salts in the pores. Native nickel is rarely found on Earth's surface, being mostly confined to the interiors of larger nickel–iron meteorites.
Photo: Alchemist-hp

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