One of the strongest coloring oxides used by the potter Cobalt creates a dark dense royal blue in most cases Historically used in China as a painting pigment on Blue and White wares
A silvery-white magnetic metallic element, which, even in small quantities, gives a strong blue coloration to glass It can be used as a decolorizor on its own for opal glasses For flint, it may be used with selenium, manganese, nickle or cerium
A hard, ductile, ferromagnetic metal It is rare but produced primarily as a byproduct of other metals It is used in chemical agents, electroplating, ceramics, lamp filaments, catalysts, dryers in printing inks, paints and varnishes, and in high temperature alloys Cobalt can be soluble in water, but depends mainly on the presence and characteristics of adsorbing clay minerals and hydrous oxides of iron, manganese and aluminum in the local environment Chelation is also possible
a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
One of eight micronutrients essential to plant health Cobalt is thought to be an important catalyst in nitrogen fixation It may need to be added to some soils before seeding legumes
Cobalt or cobalt blue is a deep blue colour. a woman in a soft cobalt blue dress. Metallic chemical element, one of the transition elements, chemical symbol Co, atomic number
Cobalt is a tough lustrous silver-white magnetic metallic element that is related to and occurs with iron and nickel and is used especially in alloys
Chemical symbol Co Gray magnetic metal of medium hardness with good corrosion resistance Used as matrix metal in most cemented carbides Principal function is for alloying in tool steels or superalloys because of its ability to harden ferrite (iron)
Cobalt is a hard silvery-white metal which is used to harden steel and for producing a blue dye. a country rich in copper, cobalt and diamonds