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The crystal structure of johnbaumite, Ca5(AsO4)3OH, the arsenate analogue of hydroxylapatite

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Veröffentlicht/Copyright: 7. März 2015
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American Mineralogist
Aus der Zeitschrift American Mineralogist Band 98 Heft 8-9

Abstract

The crystal structure of johnbaumite, ideally Ca5(AsO4)3OH, was determined and refined using crystals from the Harstigen mine, Värmland, Sweden, on the basis of X‑ray diffraction data. The structure was refined to R1 = 0.038 in space group P63/m, with unit-cell parameters a = 9.7242(2), c = 6.9657(9) Å, and V = 570.43(2) Å3. The chemical composition of the sample, determined by electronmicroprobe analysis, is (Ca5.02Pb0.03)Σ5.05[As2.91P0.04Si0.02]Σ2.97O12(OH0.97Cl0.03).

Johnbaumite belongs to the calcium arsenate apatites, together with svabite, Ca5(AsO4)3F, and turneaureite, Ca5(AsO4)3Cl. Johnbaumite is topologically similar to the other members of the apatite supergroup: columns of face-sharing M1 polyhedra run along c and are connected through TO4 tetrahedra, giving rise to a zeolite-like microporous framework, with channels hosting M2 cations and X anions.

This is the first published single-crystal structure study of johnbaumite and the first report of this calcium arsenate apatite from the Harstigen mine. Actually, johnbaumite was identified at this locality at the end of the 19th Century but it was described as svabite.

Keywords : Johnbaumite; calcium arsenate; apatite supergroup; crystal structure; Harstigen mine
Received: 2012-12-20
Accepted: 2013-4-15
Published Online: 2015-3-7
Published in Print: 2013-8-1

© 2015 by Walter de Gruyter Berlin/Boston

Artikel in diesem Heft

  1. Editorial. Why you should publish your best papers in American Mineralogist: An International Journal of Earth and Planetary Materials
  2. Highlights and Breakthroughs. New constraints on the size of chondrite parent bodies
  3. Actinides in Geology, Energy, and the Environment. Further investigation of the initial fission-track length and geometry factor in apatite fission-track thermochronology
  4. Versatile monazite: Resolving geological records and solving challenges in materials science. Carboniferous inherited grain and age zoning of monazite and xenotime from leucogranites in far-eastern Nepal: Constraints from electron probe microanalysis
  5. Versatile monazite: Resolving geological records and solving challenges in materials science. Diffusion of helium in natural monazite, and preliminary results on He diffusion in synthetic light rare earth phosphates
  6. Crystal structure of the high-pressure phase of calcium hydroxide, portlandite: In situ powder and single-crystal X-ray diffraction study
  7. Experimental development of patch perthite from synthetic cryptoperthite: Microstructural evolution and chemical re-equilibration
  8. Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup
  9. Behavior of gold in a magma at sulfide-sulfate transition: Revisited
  10. A disordered nanoparticle model for 6-line ferrihydrite
  11. NanoSIMS Pb/Pb dating of tranquillityite in high-Ti lunar basalts: Implications for the chronology of high-Ti volcanism on the Moon
  12. Iron sulfide stoichiometry as a monitor of sulfur fugacity in gas-mixing experiments
  13. Relaxation effects and re-entrant spin glass behavior at low temperatures in natural strunzite, ferristrunzite, and ferrostrunzite
  14. Enthalpies of formation of Fe-Ni monosulfide solid solutions
  15. Influence of temperature and Cl on the hydrothermal replacement of calcite by apatite and the development of porous microstructures
  16. Ordering state in orthopyroxene as determined by precession electron diffraction
  17. Interlayer water molecules in organocation-exchanged vermiculite and montmorillonite: A case study of tetramethylammonium
  18. Spectroscopic and X-ray diffraction investigation of the behavior of hanksite and tychite at high pressures, and a model for the compressibility of sulfate minerals
  19. Low-temperature magnetism of alabandite: Crucial role of surface oxidation
  20. Crystallographic and spectroscopic characterization of Fe-bearing chromo-aluminopovondraite and its relations with oxy-chromium-dravite and oxy-dravite
  21. Experimental determination of siderite stability at high pressure
  22. Relationships among channel topology and atomic displacements in the structures of Pb5(BO4)3Cl with B = P (pyromorphite), V (vanadinite), and As (mimetite)
  23. The crystal structure of johnbaumite, Ca5(AsO4)3OH, the arsenate analogue of hydroxylapatite
  24. A comparison of the Ca3(PO4)2 and CaSiO3 systems, with a new structure refinement of tuite synthesized at 15 GPa and 1300 °C
  25. The system K2CO3-MgCO3 at 6 GPa and 900–1450 °C
  26. Influence of H2 fluid on the stability and dissolution of Mg2SiO4 forsterite under high pressure and high temperature
  27. Crystal chemistry of Cu-bearing tourmalines
  28. Lead-tellurium oxysalts from Otto Mountain near Baker, California: XI. Eckhardite, (Ca,Pb)Cu2+Te6+O5(H2O), a new mineral with HCP stair-step layers
  29. Neutron diffraction in gemology: Single-crystal diffraction study of brazilianite, NaAl3(PO4)2(OH)4
https://doi.org/10.2138/am.2013.4443
Schlagwörter für diesen Artikel
Johnbaumite; calcium arsenate; apatite supergroup; crystal structure; Harstigen mine

Artikel in diesem Heft

  1. Editorial. Why you should publish your best papers in American Mineralogist: An International Journal of Earth and Planetary Materials
  2. Highlights and Breakthroughs. New constraints on the size of chondrite parent bodies
  3. Actinides in Geology, Energy, and the Environment. Further investigation of the initial fission-track length and geometry factor in apatite fission-track thermochronology
  4. Versatile monazite: Resolving geological records and solving challenges in materials science. Carboniferous inherited grain and age zoning of monazite and xenotime from leucogranites in far-eastern Nepal: Constraints from electron probe microanalysis
  5. Versatile monazite: Resolving geological records and solving challenges in materials science. Diffusion of helium in natural monazite, and preliminary results on He diffusion in synthetic light rare earth phosphates
  6. Crystal structure of the high-pressure phase of calcium hydroxide, portlandite: In situ powder and single-crystal X-ray diffraction study
  7. Experimental development of patch perthite from synthetic cryptoperthite: Microstructural evolution and chemical re-equilibration
  8. Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup
  9. Behavior of gold in a magma at sulfide-sulfate transition: Revisited
  10. A disordered nanoparticle model for 6-line ferrihydrite
  11. NanoSIMS Pb/Pb dating of tranquillityite in high-Ti lunar basalts: Implications for the chronology of high-Ti volcanism on the Moon
  12. Iron sulfide stoichiometry as a monitor of sulfur fugacity in gas-mixing experiments
  13. Relaxation effects and re-entrant spin glass behavior at low temperatures in natural strunzite, ferristrunzite, and ferrostrunzite
  14. Enthalpies of formation of Fe-Ni monosulfide solid solutions
  15. Influence of temperature and Cl on the hydrothermal replacement of calcite by apatite and the development of porous microstructures
  16. Ordering state in orthopyroxene as determined by precession electron diffraction
  17. Interlayer water molecules in organocation-exchanged vermiculite and montmorillonite: A case study of tetramethylammonium
  18. Spectroscopic and X-ray diffraction investigation of the behavior of hanksite and tychite at high pressures, and a model for the compressibility of sulfate minerals
  19. Low-temperature magnetism of alabandite: Crucial role of surface oxidation
  20. Crystallographic and spectroscopic characterization of Fe-bearing chromo-aluminopovondraite and its relations with oxy-chromium-dravite and oxy-dravite
  21. Experimental determination of siderite stability at high pressure
  22. Relationships among channel topology and atomic displacements in the structures of Pb5(BO4)3Cl with B = P (pyromorphite), V (vanadinite), and As (mimetite)
  23. The crystal structure of johnbaumite, Ca5(AsO4)3OH, the arsenate analogue of hydroxylapatite
  24. A comparison of the Ca3(PO4)2 and CaSiO3 systems, with a new structure refinement of tuite synthesized at 15 GPa and 1300 °C
  25. The system K2CO3-MgCO3 at 6 GPa and 900–1450 °C
  26. Influence of H2 fluid on the stability and dissolution of Mg2SiO4 forsterite under high pressure and high temperature
  27. Crystal chemistry of Cu-bearing tourmalines
  28. Lead-tellurium oxysalts from Otto Mountain near Baker, California: XI. Eckhardite, (Ca,Pb)Cu2+Te6+O5(H2O), a new mineral with HCP stair-step layers
  29. Neutron diffraction in gemology: Single-crystal diffraction study of brazilianite, NaAl3(PO4)2(OH)4
Heruntergeladen am 12.4.2026 von https://www.degruyterbrill.com/document/doi/10.2138/am.2013.4443/html
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