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Paulkellerite

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Formula:
(BiO)2Fe3+(PO4)(OH)2
Colour:
Yellow-green
Lustre:
Vitreous
Hardness:
4
Specific Gravity:
6.17 (Calculated)
Crystal System:
Monoclinic
Name:
For Dr. Paul Keller of the University of Stuttgart
This page provides mineralogical data about Paulkellerite.


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Classification of PaulkelleriteHide

Approved
Approval Year:
1987
8.BM.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
M : With medium-sized and large cations, (OH, etc.):RO4 = 4:1
41.3.8.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : (AB)3(XO4)Zq
19.10.12

19 : Phosphates
10 : Phosphates of Pb, Th, V and Bi

Physical Properties of PaulkelleriteHide

Vitreous
Transparency:
Transparent
Colour:
Yellow-green
Streak:
light yellow
Hardness:
Cleavage:
None Observed
Density:
6.17 g/cm3 (Calculated)

Optical Data of PaulkelleriteHide

Type:
Biaxial (+)
RI values:
nα = 1.762(2) nβ = 1.767(2) nγ = 1.825(5)
2V:
Measured: 37° (2), Calculated: 34°
Max Birefringence:
δ = 0.063
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
absent
Pleochroism:
Non-pleochroic

Chemical Properties of PaulkelleriteHide

Formula:
(BiO)2Fe3+(PO4)(OH)2
IMA Formula:
Bi3+2Fe3+O2(PO4)(OH)2
Common Impurities:
CO2

Crystallography of PaulkelleriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 11.380(3) Å, b = 6.660(3) Å, c = 9.653(3) Å
β = 115.34(2)°
Ratio:
a:b:c = 1.709 : 1 : 1.449
Unit Cell V:
661.22 ų (Calculated from Unit Cell)
Z:
4

Type Occurrence of PaulkelleriteHide

General Appearance of Type Material:
wedge-shaped, euhedral crystals, with slightly curved faces, which vary from 0.2 to 0.8 mm in size.
Place of Conservation of Type Material:
Smithsonian Institution (NMNH no. 163777).Part of the holotype is in the National Museum of Natural Sciences in Ottawa (NMNS no. 53450), and the remainder is at the Bergakademie Freiberg, D.D.R.
Associated Minerals at Type Locality:

Synonyms of PaulkelleriteHide

Other Language Names for PaulkelleriteHide

Related Minerals - Nickel-Strunz GroupingHide

8.BM.Betpakdalite-NaNa[Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4] Mon. 2/m : B2/m
8.BM.05Retzian-(Ce)Mn2+2Ce(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
8.BM.05Retzian-(La)(Mn2+,Mg)2(La,Ce,Nd)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
8.BM.05Retzian-(Nd)Mn2+2(Nd,Ce,La)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
8.BM.10KolitschitePbZn0.5Fe3(AsO4)2(OH)6Mon. 2/m : B2/b
8.BM.15Brendelite(Bi3+,Pb)2(Fe3+,Fe2+)(PO4)O2(OH)Mon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.10.1OxypyromorphitePb10(PO4)6O
19.10.2PlumbogummitePbAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
19.10.3KamitugaitePbAl[(UO2)5(PO4)2.38(AsO4)0.62O2(OH)2] · 11.5H2OTric. 1 : P1
19.10.5DrugmanitePb2(Fe3+,Al)(PO4)(PO3OH)(OH)2Mon. 2/m : P21/b
19.10.6BrabantiteCaTh(PO4)2Mon.
19.10.8Grayite(Th,Pb,Ca)(PO4) · H2OHex. 6 2 2 : P62 2 2
19.10.9Brockite(Ca,Th,Ce)PO4 · H2OHex. 6 2 2 : P62 2 2
19.10.10SincositeCa(VO)2(PO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P42/nnm
19.10.11XimengiteBi(PO4)Trig.

Fluorescence of PaulkelleriteHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for PaulkelleriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dunn, P. J., Grice, J. D., Wicks, F. J. & Gault, R. A. (1988): Paulkellerite, a new bismuth iron phosphate mineral from Schneeberg, Germany. American Mineralogist: 73: 870-872.
Grice J D, Groat L A (1988) Crystal structure of paulkellerite. American Mineralogist 73, 873-875.

Internet Links for PaulkelleriteHide

Localities for PaulkelleriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Germany (TL)
 
  • Saxony
    • Erzgebirge
      • Schneeberg District
        • Neustädtel
          • Junge Kalbe Mine
Amer. Min. (1988) 73, 870-872 and 873-875
Mineral and/or Locality  
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