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Paralaurionite Mineral Data

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General Paralaurionite 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) 1899
Help on Locality: Locality: Ancient lead slags at Laurium, Greece. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from its similarity to laurionite.
Help on Name Pronunciation: Name Pronunciation: Paralaurionite + Pronunciation Say PARALAURIONITE
Help on Synonym: Synonym: ICSD 74291
  PDF 16-158

Paralaurionite Image

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Comments: Transparent, prismatic Paralaurionite crystal.
Location: Laurium, Greece. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Paralaurionite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.711:1:1.8065
Help on Cell Dimensions: Cell Dimensions: a = 10.79, b = 3.98, c = 7.19, Z = 4; beta = 117.2° V = 274.62 Den(Calc)= 6.28
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.21(1), 5.14(1), 2.51(0.9),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

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

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Paralaurionite

Help on Cleavage: Cleavage: {001} Distinct
Help on Color: Color: Colorless, Violet, Green yellow, White.
Help on Density: Density: 6.05
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Subadamantine
Help on Streak: Streak: white

Optical Properties of Paralaurionite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.107 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1805,KPDmeas= 0.1873,KC= 0.1693
Ncalc = 2.02 - 2.06
Help on Optical Data: Optical Data: Biaxial (-), a=2.05, b=2.15, g=2.2, bire=0.1500

Calculated Properties of Paralaurionite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.22 gm/cc
note: Specific Gravity of Paralaurionite =6.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.17
Boson Index = 0.83
Help on Photoelectric: Photoelectric: PEParalaurionite =1,473.61 barns/electron
U=PEParalaurionite x rElectron Density=7,698.21 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paralaurionite is Not Radioactive

Paralaurionite Classification

Help on  Dana Class: Dana Class: (10)Oxyhalides and Hydroxyhalides
  (10.02)where A (O,OH) Xq
  (10.02.03)Dana Group Paralaurionite PbCl(OH) C 2/m 2/m Belloite! Cu(OH)Cl P 21/a 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 Paralaurionite Information

Help on References: References: NAME( Ford32) 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 Paralaurionite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Glendale Community College
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.DC.05





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