出典:Wikipedia
出典:『Wikipedia』 (2011/07/19 04:09 UTC 版)
Apatite is a group of phosphate minerals, usually referring to hydroxyapatite, fluorapatite, chlorapatite and bromapatite, named for high concentrations of OH−, F−, Cl− or Br− ions, respectively, in the crystal. The formula of the admixture of the four most common endmembers is written as Ca10(PO4)6(OH, F, Cl, Br)2, and the crystal unit cell formulae of the individual minerals are written as Ca10(PO4)6(OH)2, Ca10(PO4)6(F)2, Ca10(PO4)6(Cl)2 and Ca10(PO4)6(Br)2.
pittas
ハジロオオシギ
tuataras
オオハシカッコウ
waratahs
テグー
tejus
katydids
a paste-pot
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