Mineralogy Database

Bournonite Mineral Data

Search Webmineral :
  
Advertisment

General Bournonite Information

Help on Chemical  Formula: Chemical Formula: PbCuSbS3
Help on Composition: Composition: Molecular Weight = 488.69 gm
   Copper    13.00 %  Cu
   Antimony  24.91 %  Sb
   Lead      42.40 %  Pb
   Sulfur    19.68 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: PbCuSbS3
Help on Environment: Environment: Moderate temperature hydrothermal veins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1805
Help on Locality: Locality: Wheal Boys, St Endellion, Cornwall, England Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the French mineralogist, J. L. de Bournon (1751-1825).
Help on Name Pronunciation: Name Pronunciation: Bournonite + Pronunciation Say BOURNONITE
Help on Synonym: Synonym: Endellionite
  ICSD 14303
  PDF 42-1407
  Wheel Ore
 

Bournonite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Bournonite

Comments: Lustrous, silvery crystals of bournonite on massive bournonite.
Location: Mercedes Mine, Huanuco Dept., Peru. Scale: 3x3x2.7 cm.
© Isaias Casanova / IC Minerals

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Bournonite

Comments: Bright, blocky crystalline aggregate of steel gray bournonite crystals.
Location: Yao-gan-xian mine, Hunan China. Scale: Picture size 2 cm.
© Fabre Minerals

Bournonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9379:1:0.8965
Help on Cell Dimensions: Cell Dimensions: a = 8.16, b = 8.7, c = 7.8, Z = 2; V = 553.74 Den(Calc)= 2.93
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pn21m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.74(1), 1.768(0.5), 2.685(0.45),
Help on Forms: Forms:

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

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

Help on Above

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

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

 

Physical Properties of Bournonite

Help on Cleavage: Cleavage: {010} Imperfect
Help on Color: Color: Gray, Black, Steel gray.
Help on Density: Density: 5.7 - 5.9, Average = 5.8
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Cog-wheel - Generally six sided twinned crystals forming Cog-Wheel shapes
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: gray
 

Optical Properties of Bournonite

Help on RL Anisotrophism: RL Anisotrophism: Weak in air.
Help on RL Pleochroism: RL Pleochroism: Very weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Bournonite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   37.30   37.00 
   
 420 nm   37.40   37.70 
 440 nm   37.50   38.40 
 460 nm   36.90   38.00 
 480 nm   36.20   37.40 
 500 nm   35.60   37.00 
 520 nm   35.00   36.60 
 540 nm   34.50   36.30 
 560 nm   34.00   36.00 
 580 nm   33.60   35.50 
 600 nm   33.00   34.90 
 620 nm   32.60   34.20 
 640 nm   32.20   33.50 
 660 nm   31.80   32.90 
 680 nm   31.40   32.40 
 700 nm   31.20   32.00 
Calculated Relative Intensity Colors of Bournonite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270%
R1                      
R2                      
 

Calculated Properties of Bournonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.52 gm/cc
note: Specific Gravity of Bournonite =2.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEBournonite = 850.10 barns/electron
U=PEBournonite x rElectron Density=2,140.67 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bournonite is Not Radioactive
 

Bournonite Classification

Help on  Dana Class: Dana Class: 03.04.03.02 (03)Sulfides - Sulfosalts
  (03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.04.03)Seligmannite Group
 
03.04.03.01 Seligmannite PbCuAsS3 Pmmn 2/m 2/m 2/m
 
03.04.03.02 Bournonite PbCuSbS3 Pn21m 2/m 2/m 2/m
 
03.04.03.03 Soucekite PbCuBi(S,Se)3 Pn21m mm2
Help on  Strunz Class: Strunz Class: 02.GA.50 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
  02.GA -Neso-sulfarsenites, etc., without additional S
 
02.GA.50 Bournonite PbCuSbS3 Pn21m 2/m 2/m 2/m
 
02.GA.50 Seligmannite PbCuAsS3 Pmmn 2/m 2/m 2/m
 
02.GA.50 Soucekite PbCuBi(S,Se)3 Pn21m mm2
 

Other Bournonite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Bournonite :
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 - HyperPhysics
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - Philatelic Mineralogy
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery
19 - WWW-MINCRYST

Search for Bournonite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Bournonite :

Ask about Bournonite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Bournonite Specimen Label here :

Bournonite

PbCuSbS3
Dana No: 03.04.03.02 Strunz No: 02.GA.50
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.