Petitjeanite Mineral Data

General Petitjeanite Information

Chemical Formula:

Bi+++3(PO4)2O(OH)

Composition:

Molecular Weight = 849.89 gm

Bismuth 73.77 % Bi 82.24 % Bi₂O₃

Phosphorus 7.29 % P 16.70 % P₂O₅

Hydrogen 0.12 % H 1.06 % H₂O

Oxygen 18.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₃(PO₄)₂O(OH)

Environment:

Secondary mineral in a silicified barite vein. Forms series with preisingerite and schumacherite.

IMA Status:

Approved IMA 1993

Locality:

Gadernheim, Germany Link to MinDat.org Location Data.

Name Origin:

Named for Klaus Petitjean, amateur mineral collector who has discovered several new species in the Reichenbach, Germany district.

Name Pronunciation:

Petitjeanite + Pronunciation

Synonym:

IMA1992-013

Petitjeanite Crystallography

Axial Ratios:

a:b:c =1.3514:1:0.947

Cell Dimensions:

a = 9.798, b = 7.25, c = 6.866, Z = 2; alpha = 88.28°, beta = 115.27°, gamma = 110.7° V = 412.40 Den(Calc)= 6.84

Crystal System:

Triclinic - Pedial H-M Symbol (1) Space Group: P1

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

By Intensity(I/I_o): 3.188(1), 3.135(0.95), 3.247(0.87),

Physical Properties of Petitjeanite

Cleavage:

None

Color:

Brown, Deep yellow, White, Black.

Diaphaneity:

Transparent to Translucent

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Adamantine

Streak:

white

Optical Properties of Petitjeanite

Gladstone-Dale:

CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1585,KC= 0.16
Ncalc = 2.11

Optical Data:

Biaxial (+), a=2.06, g=2.13, bire=0.0700, 2V(Meas)=75.

Calculated Properties of Petitjeanite

Electron Density:

Bulk Density (Electron Density)=5.85 gm/cc
note: Specific Gravity of Petitjeanite =6.91 gm/cc.

Fermion Index:

Fermion Index = 0.0000912767
Boson Index = 0.9999087233

Photoelectric:

PE_Petitjeanite=1,401.71 barns/electron
U=PE_Petitjeanite x rElectron Density=8,205.53 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Petitjeanite is Not Radioactive

Petitjeanite Classification

Dana Class:

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

(41.10)where (A++ B++)3 (XO4)2 Zq

(41.10.10)Dana Group

41.10.10.01 Petitjeanite Bi3(PO4)2O(OH) P1 1

Strunz Class:

08.BO.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BO -With only large cations, (OH, etc.):RO4 ï¿½ 1:1

08.BO.10 Preisingerite Bi3(AsO4)2O(OH) P1 1

08.BO.10 Petitjeanite Bi3(PO4)2O(OH) P1 1

08.BO.10 Schumacherite Bi3[(V,As,P)O4]2O(OH) P1 1

Other Petitjeanite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.79,p765,1994) OPTIC PROP.(Am.Min.,Vol.79,p765,1994)

See Also:

Links to other databases for Petitjeanite :
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

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Petitjeanite

Bi+++3(PO4)2O(OH)
Dana No: 41.10.10.01 Strunz No: 08.BO.10
Locality:

Notes:

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