Paulkellerite Mineral Data

Paulkellerite Mineral Data +

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General Paulkellerite Information

Chemical Formula:

Bi2Fe+++(PO4)O2(OH)2

Composition:

Molecular Weight = 634.79 gm

Iron 8.80 % Fe 12.58 % Fe₂O₃

Bismuth 65.84 % Bi 73.40 % Bi₂O₃

Phosphorus 4.88 % P 11.18 % P₂O₅

Hydrogen 0.32 % H 2.84 % H₂O

Oxygen 20.16 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₂Fe³⁺(PO₄)O₂(OH)₂

IMA Status:

Approved IMA 1988

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 202598

PDF 41-1468

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Paulkellerite Crystallography

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 - PrismaticH-M Symbol (2/m) Space Group: C 2/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.123(1), 2.162(0.4), 2.804(0.3),

Crystal Structure:

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Grice J D , Groat L A , American Mineralogist , 73 (1988) p.873-875, Crystal structure of paulkellerite

Physical Properties of Paulkellerite

Cleavage:

None

Color:

Greenish yellow.

Diaphaniety:

Transparent

Hardness:

4 - Fluorite

Luster:

Vitreous - Adamantine

Streak:

light yellow

Optical Properties of Paulkellerite

Gladstone-Dale:

CI calc= 0.317 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1244,KC= 0.182

Optical Data:

Biaxial (+), a=1.762, b=1.767, g=1.825, bire=0.0630, 2V(Calc)=34, 2V(Meas)=37.

Calculated Properties of Paulkellerite

Electron Density:

r_electron=5.43 gm/cc
note: r_{Paulkellerite}=6.31 gm/cc.

Fermion Index

Fermion Index = 0.00196
Boson Index = 0.99804

Photoelectric:

PE_{Paulkellerite}=1,235.17 barns/electron
U=PE_{Paulkellerite} x r_electron=6,703.74 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Paulkellerite is Not Radioactive

Paulkellerite Classification

Dana Class:

41.3.8.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.3)where (A B)3 (XO4) Zq

(41.3.8)Dana Group

41.3.8.1 Paulkellerite Bi2Fe(PO4)O2(OH)2 C 2/c 2/m

41.3.8.2 Brendelite! (Bi,Pb)2Fe(PO4)(O,OH)3 C 2/m 2/m

Strunz Class:

VII/B.37-10 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.37 - Paulkellerite series

VII/B.37-05 Brendelite! (Bi,Pb)2Fe(PO4)(O,OH)3 C 2/m 2/m

VII/B.37-10 Paulkellerite Bi2Fe(PO4)O2(OH)2 C 2/c 2/m

VII/B.37-15 Neustadtelite! Bi2Fe(Fe,Co)(O,OH)2(OH)2(AsO4)2 P1 1

VII/B.37-17 Cobaltneustadtelite! Bi2Fe(Co,Fe)(O,OH)2(OH)2(AsO4)2 P1 1

VII/B.37-20 Medenbachite! Bi2Fe(Cu,Fe)(O,OH)2(OH)2(AsO4)2 P1 1

Other Paulkellerite Information

References:

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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Print or Cut-and-Paste your Paulkellerite Specimen Label here :

Paulkellerite

Bi2Fe+++(PO4)O2(OH)2
Dana No: 41.3.8.1 Strunz No: VII/B.37-10
Locality:

Notes: