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 zir·con /ˈzɝˌkɑn, kən/
 鋯石

 Zir·con n.
 1. Min. A mineral consisting predominantly of zirconium silicate (Zr2SiO4) occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia.  A red variety, used as a gem, is called hyacinth. Colorless, pale-yellow or smoky-brown varieties from Ceylon are called jargon.
 Zircon syenite, a coarse-grained syenite containing zircon crystals and often also elaeolite. It is largely developed in Southern Norway.
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 zircon
      n : a common mineral occurring in small crystals; chief source
          of zirconium; used as a refractory when opaque and as a
          gem when transparent [syn: zirconium silicate]