Felbertalite Mineral Data

Felbertalite Mineral Data
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General Felbertalite Information

Help on Chemical Formula: Chemical Formula: Cu2Pb6Bi8S19
Help on Composition: Composition: Molecular Weight = 3,599.51 gm
   Cadmium   0.31 %  Cd
   Copper    3.53 %  Cu
   Silver    1.20 %  Ag
   Bismuth  48.19 %  Bi
   Lead     29.93 %  Pb
   Sulfur   16.84 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu2Ag0.4Cd0.1Pb5.2Bi8.3S18.9
Help on Environment: Environment: Quartz-scheelite discordant ore veins. Structure related to junoite.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Felbertal valley, Salzburg Province, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: ICSD 411110
  IMA1999-042
 

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Felbertalite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =6.824:1:5.1213
Help on Cell Dimensions: Cell Dimensions: a = 27.6367, b = 4.0499, c = 20.7409, Z = 2; beta = 131.258° V = 1,745.14 Den(Calc)= 6.85
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.791(0.8)(223), 2.32(0.8)(116), 1.744(0.8)(626),2.031(0.8)(020), 2.062(0.8)(117), 2.096(0.8)(11.1.7), 2.918(0.8)(510), 3.382(0.8)(406), 3.507(0.8)(313),
Click Here for Large Felbertalite Structure Window Crystal Structure:

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Topa D , Makovicky E , Balic-Zunic T , Berlepsch P , European Journal of Mineralogy , 12 (2000) p.825-833, The crystal structure of Cu2Pb6Bi8S19

 

Physical Properties of Felbertalite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black
 

Calculated Properties of Felbertalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.71 gm/cc
note: Specific Gravity of Felbertalite =6.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEFelbertalite =1,489.49 barns/electron
U=PEFelbertalite x rElectron Density=8,499.69 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Felbertalite is Not Radioactive
 

Felbertalite Classification
Help on Dana Class: Dana Class: 03.07.14.02 (03)Sulfides - Sulfosalts
  (03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.07.14)Dana Group
 
03.07.14.01 Junoite Pb3Cu2Bi8(S,Se)16 C 2/m 2/m
 
03.07.14.02 Felbertalite! Cu2Pb6Bi8S19 C 2/m 2/m
Help on Strunz Class: Strunz Class: 02.JB.25b 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.25b Felbertalite! Cu2Pb6Bi8S19 C 2/m 2/m
 

Other Felbertalite Information
Help on References: References: NAME( AmMin, Vol 87, p 765) PHYS. PROP.(AmMin, Vol 87, p 765)
Help on See Also: See Also: Links to other databases for Felbertalite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Felbertalite

Cu2Pb6Bi8S19
Dana No: 03.07.14.02 Strunz No: 02.JB.25b
Locality:

 

Notes: