Mineralogy Database

Bursaite Mineral Data

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General Bursaite Information

Help on Chemical  Formula: Chemical Formula: Pb5Bi4S11
Help on Composition: Composition: Molecular Weight = 2,177.65 gm
   Silver    0.99 %  Ag
   Bismuth  38.39 %  Bi
   Lead     44.72 %  Pb
   Sulfur   15.90 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Pb4.7Bi4Ag0.2S10.8
Help on Environment: Environment: In a contact metamorphic scheelite deposit. Bursaite (1955) is a mixture of two phases
Help on IMA Status: IMA Status: Discredited IMA 2006 - Valid Species (Pre-IMA) 1955
Help on Locality: Locality: From Uludag, Bursa Province, Turkey. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the locality in Bursa Province, Turkey.
Help on Name Pronunciation: Name Pronunciation: Bursaite Say BURSAITE
Help on Synonym: Synonym: ICSD 24470
  PDF 25-431
 

Bursaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3078:1:1.5331
Help on Cell Dimensions: Cell Dimensions: a = 4.118, b = 13.376, c = 20.508, Z = 2; V = 1,129.63 Den(Calc)= 6.40
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Bbmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.88(1), 2.05(0.9), 3.38(0.9),
 

Physical Properties of Bursaite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Gray.
Help on Density: Density: 6.2
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Metallic
 

Optical Properties of Bursaite

Help on RL Anisotrophism: RL Anisotrophism: Strong, in gray-bluish and yellowish colors.
Help on RL Color: RL Color: White.
Help on RL Pleochroism: RL Pleochroism: Weak, white with blue tint to brown to light gray.
 

Calculated Properties of Bursaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.29 gm/cc
note: Specific Gravity of Bursaite =6.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PEBursaite =1,582.31 barns/electron
U=PEBursaite x rElectron Density=8,366.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bursaite is Not Radioactive
 

Bursaite Classification

Help on  Dana Class: Dana Class: 03.04.15.02 (03)Sulfides - Sulfosalts
  (03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.04.15)Lillianite Group (Orthorhombic, AmBnS6 where A=Pb, Ag, Mn and B=Sb, Bi)
 
03.04.15.01 Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m
 
03.04.15.02 Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m
 
03.04.15.03 Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m
 
03.04.15.04 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m
 
03.04.15.05 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m
 
03.04.15.06 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m
 
03.04.15.07 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m
 
03.04.15.08 Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 02.JB.40a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JB -Galena derivatives, with Pb
 
02.JB.40a Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m
 
02.JB.40a Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m
 
02.JB.40a Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m
 
02.JB.40a Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m
 
02.JB.40a Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m
 
02.JB.40a Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m
 
02.JB.40a Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m
 
02.JB.40a Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m
 
02.JB.40a Xilingolite Pb3Bi2S6 C 2/m 2/m
 
02.JB.40a Treasurite Ag7Pb6Bi15S32 B2/m 2/m
 
02.JB.40a Vikingite Ag5Pb8Bi13S30 C 2/m 2/m
 

Other Bursaite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Bursaite :
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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Print or Cut-and-Paste your Bursaite Specimen Label here :

Bursaite

Pb5Bi4S11
Dana No: 03.04.15.02 Strunz No: 02.JB.40a
Locality:

 

Notes:

 

 
   
 


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