Mineralogy Database

Pseudoboleite Mineral Data

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General Pseudoboleite Information

Help on Chemical  Formula: Chemical Formula: Pb5Cu4Cl10(OH)8•2(H2O)
Help on Composition: Composition: Molecular Weight = 10962.72 gm
   Copper    13.91 %  Cu   17.41 % CuO
   Hydrogen   0.44 %  H     3.94 % H2O
   Lead      58.59 %  Pb   63.12 % PbO
   Chlorine  20.05 %  Cl   20.05 % Cl
               -   %   Cl   -4.52 % -O=Cl2   
   Oxygen     7.01 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb31Cu24Cl62(OH)48
Help on Environment: Environment: Sedimentary copper deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1895
Help on Locality: Locality: Boleo, near Santa Rosalia, Baja California Sur, Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its similarity to the mineral Boleite.
Help on Name Pronunciation: Name Pronunciation: Pseudoboleite + Pronunciation Say PSEUDOBOLEITE
Help on Synonym: Synonym: ICSD 67680
  PDF 22-470

Pseudoboleite Image

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Comments: Blue crystal of pseudoboleite.
Location: Curuglu Mine, Santa Rosalía (El Boleó), Boleó District, Mun. de Mulegé, Baja California Sur, Mexico. Scale: Crystal size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Pseudoboleite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.01706
Help on Cell Dimensions: Cell Dimensions: a = 15.24, c = 30.74, Z = 2; V = 7,139.60 Den(Calc)= 5.10
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.83(1), 4.43(1), 2.71(0.95),

Physical Properties of Pseudoboleite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Indigo blue.
Help on Density: Density: 5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: light green

Optical Properties of Pseudoboleite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.067 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.046 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.199,KPDmeas= 0.203,KC= 0.1903
Ncalc = 1.95 - 1.97
Help on Optical Data: Optical Data: Uniaxial (-), e=2, w=2.03, bire=0.0300.

Calculated Properties of Pseudoboleite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.40 gm/cc
note: Specific Gravity of Pseudoboleite =5.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.12
Boson Index = 0.88
Help on Photoelectric: Photoelectric: PEPseudoboleite =1,051.91 barns/electron
U=PEPseudoboleite x rElectron Density=4,623.51 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pseudoboleite is Not Radioactive

Pseudoboleite Classification

Help on  Dana Class: Dana Class: (10)Oxyhalides and Hydroxyhalides
  (10.06)where Am Bn (O,OH)p Xq
  (10.06.08)Dana Group Pseudoboleite Pb5Cu4Cl10(OH)8•2(H2O) I 4/mmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 03.DB.10 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DB -With Pb, Cu, etc.
03.DB.10 Pseudoboleite Pb5Cu4Cl10(OH)8•2(H2O) I 4/mmm 4/m 2/m 2/m

Other Pseudoboleite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Pseudoboleite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Dana No: Strunz No: 03.DB.10





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