Koutekite Mineral Data

Koutekite Mineral Data
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General Koutekite Information

Help on Chemical Formula: Chemical Formula: Cu5As2
Help on Composition: Composition: Molecular Weight = 467.57 gm
   Copper   67.95 %  Cu
   Arsenic  32.05 %  As
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu5As2
Help on Environment: Environment: Arsenical copper deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Cerny Dul, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jaromir Koutek (1902-1983), Czech mineralogist.
Help on Name Pronunciation: Name Pronunciation: Koutekite + Pronunciation Say KOUTEKITE
Help on Synonym: Synonym: ICSD 26253
  PDF 46-1394
 

Koutekite Image

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

Koutekite   Algodonite

Comments: Silvery metallic koutekite with darker gray algodonite.
Location: Mohawk Mine, Keweenaw County, Michigan, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Koutekite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.26324
Help on Cell Dimensions: Cell Dimensions: a = 11.51, c = 14.54, Z = 18; V = 1,668.19 Den(Calc)= 8.38
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.001(1), 2.044(0.9), 2.089(0.8),
Click Here for Large Koutekite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Liebisch W , Schubert K , Journal of the Less-Common Metals , 23 (1971) p.231-236, Zur struktur der mischung kupfer-arsen

 

Physical Properties of Koutekite

Help on Color: Color: Gray blue.
Help on Density: Density: 8.48
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Koutekite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Color: RL Color: Bluish gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Koutekite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   52.60   50.80 
   
 420 nm   51.00   50.30 
 440 nm   49.40   49.80 
 460 nm   47.50   48.70 
 480 nm   45.30   47.50 
 500 nm   43.30   46.10 
 520 nm   41.40   44.50 
 540 nm   39.70   43.10 
 560 nm   38.30   41.80 
 580 nm   37.00   40.80 
 600 nm   36.00   40.40 
 620 nm   35.40   40.20 
 640 nm   34.80   40.20 
 660 nm   34.40   40.30 
 680 nm   34.10   40.40 
 700 nm   34.00   40.70 
Calculated Relative Intensity Colors of Koutekite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 240%
R1                    
R2                    
 

Calculated Properties of Koutekite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.56 gm/cc
note: Specific Gravity of Koutekite =8.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric: PEKoutekite = 54.50 barns/electron
U=PEKoutekite x rElectron Density= 412.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Koutekite is Not Radioactive
 

Koutekite Classification
Help on Dana Class: Dana Class: 02.03.01.01 (02)Sulfides - Including Selenides and Tellurides
  (02.03)where Am Bn Xp, with (m+n):p=5:2
  (02.03.01)Dana Group
 
02.03.01.01 Koutekite Cu5As2 P 63/mmc 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: 02.AA.10d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.A - Simple Sulfides, Selenides, etc
  02.AA -Alloys of metalloids with Cu, Ag, Sn, Au
 
02.AA.10d Koutekite Cu5As2 P 63/mmc 6/m 2/m 2/m
 

Other Koutekite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Koutekite :
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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Ask about Koutekite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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

Koutekite

Cu5As2
Dana No: 02.03.01.01 Strunz No: 02.AA.10d
Locality:

 

Notes: