Mineralogy Database

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

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  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 Dipyramidal H-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),

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
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240%

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)Sulfides - Including Selenides and Tellurides
  (02.03)where Am Bn Xp, with (m+n):p=5:2
  (02.03.01)Dana Group 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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Dana No: Strunz No: 02.AA.10d





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