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
[edit]| 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
[edit]- ^ "Fluorpyromorphite". Retrieved 8 August 2023.
- ^ "Pyromorphite".
- ^ "Hydroxylpyromorphite".
- ^ "Oxypyromorphite". Retrieved 8 August 2023.
- ^ "Mimetite". Retrieved 8 August 2023.
- ^ "Unnamed (OH-analogue of Mimetite)".
- ^ "Vanadinite".
- ^ "Germanate-pyromorphite".
- ^ "Phosphohedyphane".
- ^ "Hedyphane".
- ^ "Hydroxylhedyphane".
- ^ "Vanackerite".