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Xenophyllite Mineral Data
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General Xenophyllite Information
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 Chemical Formula: |
Na4Fe7(PO4)6 |
| Composition: |
Molecular Weight = 1,052.72 gm |
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Sodium 8.74 % Na 11.78 % Na2O |
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Iron 37.14 % Fe 47.77 % FeO |
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Phosphorus 17.65 % P 40.45 % P2O5 |
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Oxygen 36.48 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na4Fe2+7(PO4)6 |
| Environment: |
Fillowite group |
| IMA Status: |
Proposed IMA 2006 (Dana # Added) |
| Locality: |
Augustinovka iron meteorite, Ekaterinoslav (now Dnepropetrovsk), Ukraine Link to MinDat.org Location Data. |
| Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
| Synonym: |
IMA2006-006 |
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Xenophyllite Crystallography
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| Axial Ratios: |
a:b:c =1.001:1:1.8317 |
| Cell Dimensions: |
a = 9.643, b = 9.633, c = 17.645, Z = 4; alpha = 88.26°, beta = 88.16°, gamma = 64.83° V = 1,481.98 Den(Calc)= 4.72 |
| Crystal System: |
Triclinic Space Group: P1 or P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.034(1), 2.715(0.8), 2.585(0.3),1.769(0.2), 1.87(0.2), 2.405(0.2), 2.888(0.2), 5.12(0.2), |
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Optical Properties of Xenophyllite
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| Optical Data: |
NCalc= 1.88 - from Gladstone-Dale relationship (KC = 0.1862) where Ncalc=Dcalc*KC+1
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Calculated Properties of Xenophyllite
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| Electron Density: |
Bulk Density (Electron Density)=4.56 gm/cc
note: Specific Gravity of Xenophyllite =4.72 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0080477602
Boson Index = 0.9919522398 |
| Photoelectric: |
PEXenophyllite = 12.17 barns/electron
U=PEXenophyllite x rElectron Density= 55.43 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Xenophyllite is Not Radioactive |
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Xenophyllite Classification
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| Dana Class: |
38.02.05.05 (38)Anhydrous Phosphates, etc |
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(38.02)(A+ B++)5 (XO4)3 |
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(38.02.05)Fillowite Group |
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38.02.05.01 Fillowite Na2Ca(Mn,Fe)7(PO4)6 R 3 3 |
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38.02.05.02 Johnsomervilleite Na2Ca(Mg,Fe,Mn)7(PO4)6 R 3 3 |
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38.02.05.03 Chladniite Na2Ca(Mg,Fe)7(PO4)6 R 3 3 |
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38.02.05.04 Galileiite! NaFe4(PO4)3 R 3 3 |
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38.02.05.05 Xenophyllite! Na4Fe7(PO4)6 P1 or P1 Tri |
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38.02.05.06 Stornesite-(Y)! (Y,Ca)[]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36 R 3 3 |
| Strunz Class: |
08.AC.50 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.A - Phosphates, etc. without additional anions, without H2O |
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08.AC -With medium-sized and large cations |
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08.AC.50 Fillowite Na2Ca(Mn,Fe)7(PO4)6 R 3 3 |
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08.AC.50 Chladniite Na2Ca(Mg,Fe)7(PO4)6 R 3 3 |
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08.AC.50 Johnsomervilleite Na2Ca(Mg,Fe,Mn)7(PO4)6 R 3 3 |
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08.AC.50 Galileiite! NaFe4(PO4)3 R 3 3 |
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08.AC.50 Stornesite-(Y)! (Y,Ca)[]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36 R 3 3 |
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08.AC.50 Xenophyllite! Na4Fe7(PO4)6 P1 or P1 Tri |
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Other Xenophyllite Information
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| See Also: |
Links to other databases for Xenophyllite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Xenophyllite Specimen Label here :
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Xenophyllite
Na4Fe7(PO4)6
Dana No: 38.02.05.05 Strunz No: 08.AC.50
Locality:
Notes:
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