Mineralogy Database

Cuprobismutite Mineral Data

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General Cuprobismutite Information

Help on Chemical  Formula: Chemical Formula: Cu10Bi12S23
Help on Composition: Composition: Molecular Weight = 3,880.74 gm
   Copper   16.37 %  Cu
   Bismuth  64.62 %  Bi
   Sulfur   19.00 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu10Bi12S23
Help on Environment: Environment: In quartz veins with other sulfides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1884
Help on Locality: Locality: In the USA, at the Missouri mine, Hall's Calley, Park Co., and the Silver Cliff, Custer Co., Colorado. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the composition.
Help on Synonym: Synonym: ICSD 38364
  PDF 29-536
 

Cuprobismutite Image

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

Comments: Backscattered electron image of kupcíkite (ku) replacing cuprobismutite (cu); both phases are in turn replaced by bsimuthinite derivative (bd79-92).
Location: Felbertal, Austria. Scale: Scale bar 100 µ-m.
© Canadian Mineralogist

Cuprobismutite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =4.491:1:3.8778
Help on Cell Dimensions: Cell Dimensions: a = 17.65, b = 3.93, c = 15.24, Z = 1; beta = 100.5° V = 1,039.41 Den(Calc)= 6.20
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): 3.07(1), 2.73(0.6), 3.25(0.4),
 

Physical Properties of Cuprobismutite

Help on Color: Color: Blue black, Gray, Dark blue black.
Help on Density: Density: 6.47
Help on Diaphaneity: Diaphaneity: Opaque
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Cuprobismutite

Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Color: RL Color: Gray tarnishing bluish.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cuprobismutite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   31.50   38.70 
   
 420 nm   32.50   39.20 
 440 nm   33.50   39.70 
 460 nm   34.40   40.10 
 480 nm   35.20   40.50 
 500 nm   35.80   40.80 
 520 nm   36.30   41.10 
 540 nm   36.80   41.30 
 560 nm   37.10   41.50 
 580 nm   37.30   41.80 
 600 nm   37.40   42.00 
 620 nm   37.40   42.20 
 640 nm   37.00   42.30 
 660 nm   36.50   42.20 
 680 nm   35.70   42.00 
 700 nm   34.80   41.50 
Calculated Relative Intensity Colors of Cuprobismutite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 260%
R1                      
R2                      
 

Calculated Properties of Cuprobismutite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.28 gm/cc
note: Specific Gravity of Cuprobismutite =6.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.001425988
Boson Index = 0.998574012
Help on Photoelectric: Photoelectric: PECuprobismutite =1,229.22 barns/electron
U=PECuprobismutite x rElectron Density=6,496.40 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cuprobismutite is Not Radioactive
 

Cuprobismutite Classification

Help on  Dana Class: Dana Class: 03.08.02.01 (03)Sulfides - Sulfosalts
  (03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.08.02)Cuprobismutite Series
 
03.08.02.01 Cuprobismutite Cu10Bi12S23 C 2/m 2/m
 
03.08.02.02 Kupcikite! Cu3.4Fe0.6Bi5S10 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.JA.10a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JA -Galena derivatives with little or no Pb
 
02.JA.10a Cuprobismutite Cu10Bi12S23 C 2/m 2/m
 

Other Cuprobismutite 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 Cuprobismutite :
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 Cuprobismutite Specimen Label here :

Cuprobismutite

Cu10Bi12S23
Dana No: 03.08.02.01 Strunz No: 02.JA.10a
Locality:

 

Notes:

 

 
   
 


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