Inorganic Solid Phases

Ca10(PO4)6−x(SiO4)x(OH)2−x, x= 0.8; Ca10−(y−x)/2(PO4)6−(y+x)(SiO4)x(CO3)y(OH)2 (Ca4.96[SiO4]0.40[PO4]2.13[CO3]0.47[OH][H2O]0.13) Crystal Structure

General Information

  • Phase Label(s): Ca4.96[SiO4]0.40[PO4]2.13[CO3]0.47[OH][H2O]0.13
  • Structure Class(es): apatite family
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: hP44
  • Space Group: 176
  • Phase Prototype: Ca5[PO4]3[OH]
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), X-rays, Cu Kα (determination of cell parameters)
  • Phase Class(es):
  • Compound Class(es): carbonate, hydroxide, orthophosphate, orthosilicate, hydrate
  • Interpretation Detail(s): cell parameters determined; composition dependence studied
  • Sample Detail(s): sample prepared from HCa[PO4], CaO, SiO2[H2O]0.7, Fourier transform infrared spectroscopy (FTIR), MAS NMR, thermogravimetry; [CO3] and H2O content analyzed: 0.94 and 0.25 mol., respectively; [CO3], [PO4], [SiO4], [OH] and H2O detected; small amounts of SiO2 (amorphous), powder (determination of cell parameters)

Substance Summary

  • Standard Formula: Ca4.96[SiO4]0.40[PO4]2.13[CO3]0.47[OH][H2O]0.13
  • Alphabetic Formula: [CO3]0.47Ca4.96[H2O]0.13[OH][PO4]2.13[SiO4]0.40
  • Published Formula: Ca10(PO4)6−x(SiO4)x(OH)2−x, x= 0.8; Ca10−(y−x)/2(PO4)6−(y+x)(SiO4)x(CO3)y(OH)2
  • Refined Formula:
  • Wyckoff Sequence:
  • Z Formula Units: 2
  • Density: ρ = 3.04 Mg·m−3

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Crystallographic Data

Cell Parameters

Published Data
Standardized Data
Unit Cell
Niggli-Reduced Cell
Space Group
a
b
c
α
β
γ
a/b
b/c
c/a
V

Experimental Details

Reference

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1606017

  • Copyright

    ©Springer & Material Phases Data System (MPDS), Switzerland & National Institute for Materials Science (NIMS), Japan, 2016

  • Chief Editor

    Pierre Villars, Material Phases Data System (MPDS), CH-6354 Vitznau, Switzerland

    villars.mpds@bluewin.ch

  • Credits

    SpringerMaterials Release 2016.

    Data generated pre-2002: © Springer & MPDS & NIMS; post-2001: © Springer & MPDS

    All Rights Reserved. Version 2016.10.

    Project Coordinator: Shuichi Iwata

    Section-Editor: Karin Cenzual (Crystal Structures)

  • Cite this content

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