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Paulkellerite Mineral Data
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General Paulkellerite Information
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 Chemical Formula: |
Bi2Fe+++(PO4)O2(OH)2 |
| Composition: |
Molecular Weight = 634.79 gm |
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Iron 8.80 % Fe 12.58 % Fe2O3 |
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Bismuth 65.84 % Bi 73.40 % Bi2O3 |
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Phosphorus 4.88 % P 11.18 % P2O5 |
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Hydrogen 0.32 % H 2.84 % H2O |
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Oxygen 20.16 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Bi2Fe3+(PO4)O2(OH)2 |
| Environment: |
Secondary mineral in Bi-Ni-Co ores in a hydrothermal ore deposit. |
| IMA Status: |
Approved IMA 1988 |
| Locality: |
Neuhilfe mine, Schneeberg, Saxony, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Paul Keller (1940- ), Professor of Mineralogy, University of Stuttgart, Stuttgart, Germany. |
| Name Pronunciation: |
Paulkellerite + Pronunciation  |
| Synonym: |
ICSD 202598 |
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PDF 41-1468 |
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Paulkellerite Image |
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Images:
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Paulkellerite
Comments: SEM photomicrograph of euhedral crystals of paulkellerite (AmMin, v73:870).
Location: Neuhilfe mine, Schneeberg, East Germany.
Scale: See Image.
© American Mineralogist |
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Paulkellerite Crystallography
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| Axial Ratios: |
a:b:c =1.7013:1:1.4448 |
| Cell Dimensions: |
a = 11.382, b = 6.69, c = 9.666, Z = 4; beta = 114.73° V = 668.52 Den(Calc)= 6.31 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c |
| X Ray Diffraction: |
By Intensity(I/Io): 3.123(1), 2.162(0.4), 2.804(0.3), |
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Physical Properties of Paulkellerite
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| Cleavage: |
None |
| Color: |
Greenish yellow. |
| Diaphaneity: |
Transparent |
| Hardness: |
4 - Fluorite |
| Luster: |
Vitreous - Adamantine |
| Streak: |
light yellow |
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Optical Properties of Paulkellerite
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| Gladstone-Dale: |
CI calc= 0.317 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1244,KC= 0.182
Ncalc = 2.15 |
| Optical Data: |
Biaxial (+), a=1.762, b=1.767, g=1.825, bire=0.0630, 2V(Calc)=34, 2V(Meas)=37. |
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Calculated Properties of Paulkellerite
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| Electron Density: |
Bulk Density (Electron Density)=5.43 gm/cc
note: Specific Gravity of Paulkellerite =6.31 gm/cc.
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| Fermion Index: |
Fermion Index = 0.001963026
Boson Index = 0.998036974 |
| Photoelectric: |
PEPaulkellerite =1,235.17 barns/electron
U=PEPaulkellerite x rElectron Density=6,703.74 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paulkellerite is Not Radioactive |
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Paulkellerite Classification
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| Dana Class: |
41.03.08.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.03)where (A B)3 (XO4) Zq |
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(41.03.08)Dana Group |
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41.03.08.01 Paulkellerite Bi2Fe(PO4)O2(OH)2 C 2/c 2/m |
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41.03.08.02 Brendelite! (Bi,Pb)2Fe(PO4)(O,OH)3 C 2/m 2/m |
| Strunz Class: |
08.BM.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BM -With medium-sized and large cations, (OH, etc.):RO4 = 4:1 |
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08.BM.10 Paulkellerite Bi2Fe(PO4)O2(OH)2 C 2/c 2/m |
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Other Paulkellerite Information
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.73,p870-872,1988) OPTIC PROP.(Am.Min.,Vol.73,p870-872,1988) |
| See Also: |
Links to other databases for Paulkellerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Paulkellerite Specimen Label here :
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Paulkellerite
Bi2Fe+++(PO4)O2(OH)2
Dana No: 41.03.08.01 Strunz No: 08.BM.10
Locality:
Notes:
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