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Laurionite Mineral Data

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General Laurionite Information

Help on Chemical Formula: Chemical Formula: PbCl(OH)
Help on Composition: Composition: Molecular Weight = 259.66 gm
   Hydrogen   0.39 %  H     3.47 % H2O
   Lead      79.80 %  Pb   85.96 % PbO
   Chlorine  13.65 %  Cl   13.65 % Cl
               -   %   Cl   -3.08 % -O=Cl2   
   Oxygen     6.16 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbCl(OH)
Help on Environment: Environment: Secondary mineral from smelting activities.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1887
Help on Locality: Locality: Ancient lead slags at Laurium, Greece. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Laurionite + Pronunciation Say LAURIONITE
Help on Synonym: Synonym: ICSD 28035
  PDF 31-680
 

Laurionite Image

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  Laurionite

Comments: Colorless, stellate spray of acicular Laurionite crystals on matrix.
Location: Laurium, Greece. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Laurionite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7319:1:0.4175
Help on Cell Dimensions: Cell Dimensions: a = 7.1, b = 9.7, c = 4.05, Z = 4; V = 278.92 Den(Calc)= 6.18
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.3(1), 4.01(0.9), 2.52(0.7),
Help on Forms: Forms:

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Help on Above

Forms: ( 1 0 0) ( 1 0 1) ( 8 1 2)

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Physical Properties of Laurionite

Help on Cleavage: Cleavage: {010} Distinct
Help on Color: Color: Colorless, White.
Help on Density: Density: 6.24
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Adamantine - Pearly
Help on Streak: Streak: white
 

Optical Properties of Laurionite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.058 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.068 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1807,KPDmeas= 0.179,KC= 0.1693
Ncalc = 2.05 - 2.06
Help on Optical Data: Optical Data: Biaxial (-), a=2.077, b=2.116, g=2.158, bire=0.0810, 2V(Calc)=90, 2V(Meas)=70.
 

Calculated Properties of Laurionite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.19 gm/cc
note: Specific Gravity of Laurionite =6.24 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.17
Boson Index = 0.83
Help on Photoelectric: Photoelectric: PELaurionite =1,473.61 barns/electron
U=PELaurionite x rElectron Density=7,649.18 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Laurionite is Not Radioactive
 

Laurionite Classification
Help on Dana Class: Dana Class: 10.02.02.01 (10)Oxyhalides and Hydroxyhalides
  (10.02)where A (O,OH) Xq
  (10.02.02)Dana Group
 
10.02.02.01 Laurionite PbCl(OH) Pnam 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 03.DC.05 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DC -With Pb (As,Sb,Bi), without Cu
 
03.DC.05 Laurionite PbCl(OH) Pnam 2/m 2/m 2/m
 
03.DC.05 Paralaurionite PbCl(OH) C 2/m 2/m
 

Other Laurionite 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 Laurionite :
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
16 - WWW-MINCRYST

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Laurionite

PbCl(OH)
Dana No: 10.02.02.01 Strunz No: 03.DC.05
Locality:

 

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