Lead apatite

Lead apatite is a generic name for apatite-structure materials that contain lead as the divalent cation. A Copper-doped lead-apatite has been proposed as a room-temperature superconductor. A number of minerals are known. All have a hexagonal crystal structure.

Minerals

name formula unit cell Å a : c volume density reference
Fluorpyromorphite Pb5(PO4)3F a = 9.779 c = 7.241 1 : 0.74 599.68 [1]
Pyromorphite Pb5(PO4)3Cl a = 9.987 c = 7.33 1 : 0.734 633.15 7.04 [2]
Hydroxylpyromorphite Pb5(PO4)3OH a = 9.787 c = 7.307 1: 0.747 606.13 7.32 [3]
Oxypyromorphite Pb10(PO4)6O [4]
Mimetite Pb5(AsO4)3Cl a = 10.250 c = 7.454 1 : 0.727 678.22 7.24 [5]
Pb5(AsO4)3OH a = 10.1266 c = 7.5010 1 : 0.741 666.16 [6]
Vanadinite Pb5(VO4)3Cl a = 10.3174 c = 7.3378 1 : 0.711 676.45 6.88 [7]
Germanate-pyromorphite Pb5(PO4)2GeO4 [8]
Phosphohedyphane Ca2Pb3(PO4)3Cl a = 9.857 Å, c = 7.13 1 : 0.723 599.9 5.92 [9]
Hedyphane Ca2Pb3(AsO4)3Cl a = 10.14 c = 7.185 1 : 0.798 639.78 5.82 [10]
Hydroxylhedyphane Ca2Pb3(AsO4)3(OH) a = 10.0414 c = 7.2752 1 : 0.725 635.28 [11] ?
Vanackerite Pb4Cd(AsO4)3Cl a = 10.0279 c = 7.2965 1 : 0.728 635.43 7.28 [12]

References

  1. ^ "Fluorpyromorphite". Retrieved 8 August 2023.
  2. ^ "Pyromorphite".
  3. ^ "Hydroxylpyromorphite".
  4. ^ "Oxypyromorphite". Retrieved 8 August 2023.
  5. ^ "Mimetite". Retrieved 8 August 2023.
  6. ^ "Unnamed (OH-analogue of Mimetite)".
  7. ^ "Vanadinite".
  8. ^ "Germanate-pyromorphite".
  9. ^ "Phosphohedyphane".
  10. ^ "Hedyphane".
  11. ^ "Hydroxylhedyphane".
  12. ^ "Vanackerite".

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