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zirconium

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{n: baddeleyite} a mineral consisting of zirconium oxide



{n: hafnium, Hf, atomic number 72} a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons

{n: zircon, zirconium silicate} a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent

{n: zirconium oxide, zirconia, zirconium dioxide} a white crystalline oxide; used in refractories and in insulation and abrasives and enamels and glazes

{n: zirconium, Zr, atomic number 40} a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon


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