Mineralogy Database

Seeligerite Mineral Data

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General Seeligerite Information

Help on Chemical  Formula: Chemical Formula: Pb3Cl3(IO3)O
Help on Composition: Composition: Molecular Weight = 918.86 gm
   Lead      67.65 %  Pb   72.87 % PbO
   Iodine    13.81 %  I    18.16 % I2O5
   Chlorine  11.58 %  Cl   11.58 % Cl
               -   %   Cl   -2.61 % -O=Cl2   
   Oxygen     6.96 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb3Cl3(IO3)O
Help on Environment: Environment: Secondary mineral in nitrate deposits.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Santa Ana mine, Caracoles, Sierra Groda, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Erich Seeliger, German mineralogist, Technical University, Berlin.
Help on Name Pronunciation: Name Pronunciation: Seeligerite + Pronunciation Say SEELIGERITE

Seeligerite Image

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Comments: Orange crystalline seeligerite in matrix.
Location: Casucha Mine, Sierra Gorda, Antofagasta, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Seeligerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1:1:3.4264
Help on Cell Dimensions: Cell Dimensions: a = 7.964, b = 7.964, c = 27.288, Z = 8; V = 1,730.75 Den(Calc)= 7.05
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: C 2221
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.219(1), 3.649(0.9), 2.785(0.8),

Physical Properties of Seeligerite

Help on Cleavage: Cleavage: {001} Perfect, {110} Good
Help on Color: Color: Light yellow.
Help on Density: Density: 6.83
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Streak: Streak: light yellow

Optical Properties of Seeligerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1778,KPDmeas= 0.1835,KC= 0.1689
Ncalc = 2.15 - 2.19
Help on Optical Data: Optical Data: Biaxial (-), a=2.12, b=2.32, g=2.32, bire=0.2000, 2V(Calc)=0, 2V(Meas)=4.

Calculated Properties of Seeligerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.86 gm/cc
note: Specific Gravity of Seeligerite =7.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.14
Boson Index = 0.86
Help on Photoelectric: Photoelectric: PESeeligerite =1,305.79 barns/electron
U=PESeeligerite x rElectron Density=7,654.33 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Seeligerite is Not Radioactive

Seeligerite Classification

Help on  Dana Class: Dana Class: (22)Iodates - Hydroxyl or Halogen
  (22.01)with miscellaneous formulae
  (22.01.02)Dana Group Seeligerite Pb3Cl3(IO3)O C 2221 2 2 2
Help on  Strunz Class: Strunz Class: 04.KB.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.K - Iodates
  04.KB -Iodates with additional anions, without H2O
04.KB.15 Seeligerite Pb3Cl3(IO3)O C 2221 2 2 2

Other Seeligerite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Seeligerite :
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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Dana No: Strunz No: 04.KB.15





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