Mineralogy Database

Pattersonite Mineral Data

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General Pattersonite Information

Help on Chemical  Formula: Chemical Formula: PbFe3(PO4)2(OH)4(H2O,OH)2
Help on Composition: Composition: Molecular Weight = 667.91 gm
   Iron        25.25 %  Fe   32.49 % FeO
   Phosphorus   9.18 %  P    21.04 % P2O5
   Hydrogen     1.06 %  H     9.44 % H2O
   Lead        31.02 %  Pb   32.22 % Pb2O
   Oxygen      33.49 %  O
              ______        ______ 
              100.00 %       95.19 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbFe2+3.02(PO4)1.98(OH)5.12(H2O)0.94
Help on Environment: Environment: Found in a single, head-sized boulder collected in 1986 on the dumps. Dimorphous with kintoreite.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Grube Vereinigung, near Eisenbach, Taunus, Hesse, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Arthur Lindo Patterson (1902-1966), a crystallographer who developed a method employing a Fourier series to generate a three-dimensional function, the now well-known "Patt erson function" in crystal-structure d
Help on Synonym: Synonym: IMA2005-049

Pattersonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7361:1:1.0194
Help on Cell Dimensions: Cell Dimensions: a = 5.307, b = 7.209, c = 7.349, Z = 1; alpha = 87.75°, beta = 86.36°, gamma = 71.42° V = 265.76 Den(Calc)= 4.17
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.848(1), 6.839(0.64), 3.547(0.57),3.417(0.52), 3.022(0.51), 3.667(0.47), 2.8339(0.45),

Physical Properties of Pattersonite

Help on Cleavage: Cleavage: {???} Poor
Help on Color: Color: Yellow.
Help on Density: Density: 4.04
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: very pale yellow

Optical Properties of Pattersonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.696 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.643 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2164,KPDmeas= 0.2233,KC= 0.1317
Ncalc = 1.53 - 1.55
Help on Optical Data: Optical Data: Biaxial (-), a=1.86, b=1.917, g=1.93, bire=0.0700

Calculated Properties of Pattersonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.86 gm/cc
note: Specific Gravity of Pattersonite =4.17 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEPattersonite = 523.02 barns/electron
U=PEPattersonite x rElectron Density=2,018.41 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pattersonite is Not Radioactive

Pattersonite Classification

Help on  Dana Class: Dana Class: (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.02)where (A B)2 XO4 Zq
  (30.02.10)Dana Group Pattersonite! PbFe3(PO4)2(OH)4(H2O,OH)2 P1 1
Help on  Strunz Class: Strunz Class: 08.BL.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1
08.BL.25 Pattersonite! PbFe3(PO4)2(OH)4(H2O,OH)2 P1 1

Other Pattersonite Information

Help on References: References: NAME( AmMin, v94:402) PHYS. PROP.(AmMin, v94:402) OPTIC PROP.(AmMin, v94:402)
Help on See Also: See Also: Links to other databases for Pattersonite :
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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Dana No: Strunz No: 08.BL.25





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