Inorganic Solid Phases

Sr7.3Ca2.7(PO4)6F2 (Sr3Ca2[PO4]3F) Crystal Structure

General Information

  • Phase Label(s): Sr3Ca2[PO4]3F
  • Structure Class(es): apatite family
  • Classification by Properties:
  • Mineral Name(s): fluorstrophite
  • Pearson Symbol: hP42
  • Space Group: 173
  • Phase Prototype: (Sr0.6Ca0.4)5[PO4]3F
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Syntex P1 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): orthophosphate, fluoride
  • Interpretation Detail(s): complete structure determined, least-squares refinement; I > 2σ(I), R = 0.06
  • Sample Detail(s): strontiumapatite sample from Russia, Kola Peninsula, Khibiny massif, electron microprobe analysis; 45.0-48.3 wt.% SrO, 16.5-18.3 wt.% CaO, 0.52-0.62 wt.% BaO, 0.21-0.36 wt.% Na2O, 0.45-1.15 wt.% La2O3, 0.45-0.85 wt.% Ce2O3, single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Sr3.65Ca1.35[PO4]3F
  • Alphabetic Formula: Ca1.35F[PO4]3Sr3.65
  • Published Formula: Sr7.3Ca2.7(PO4)6F2
  • Refined Formula: Ca1.34FO12P3Sr3.66
  • Wyckoff Sequence: 173,c6b2a
  • Z Formula Units: 2
  • Density: ρ = 3.99 Mg·m−3

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

Atom Coordinates

Standardized

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation
Co-ord. No.
Atomic Env.

Published

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation

Displacement Parameters

Isotropic

Site
Published
B [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1001264

  • 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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