Klockmannite Mineral Data + Say KLOCKMANNITE

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General Klockmannite Information
Help on Chemical Formula: Chemical Formula: CuSe
Help on Composition: Composition: Molecular Weight = 142.51 gm
   Copper    44.59 %  Cu
   Selenium  55.41 %  Se
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: CuSe
Help on Environment: Environment: Of hydrothermal origin.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1928
Help on Locality: Locality: Sierra de Umango, La Rioja province, Argentina. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Friedrich Klockmann (1857-1937), German mineralogist of Aachen.
Help on Synonym: Synonym: ICSD 82331
  PDF 34-171
 

Klockmannite Image

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Klockmannite

Comments: Klockmannite intergrown with covellite on quartz.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 7.5 mm.
© Thomas Witzke / Abraxas-Verlag

Klockmannite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:4.38039
Help on Cell Dimensions: Cell Dimensions: a = 3.938, c = 17.25, Z = 6; V = 231.67 Den(Calc)= 6.13
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): 2.88(1), 3.18(0.9), 1.967(0.8),
Click Here for Large Klockmannite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
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Berry L G , American Mineralogist , 39 (1954) p.504-509, The crystal structure of covellite, CuS and klockmannite, CuSe

 

Physical Properties of Klockmannite

Help on Cleavage: Cleavage: [0001] Perfect
Help on Color: Color: Blue black, Grayish black, Dark gray.
Help on Density: Density: 5.99
Help on Diaphaniety: Diaphaniety: Opaque
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Metallic - Dull
 

Optical Properties of Klockmannite

Help on RL Anisotrophism: RL Anisotrophism: Strong, brownish gray to gray-white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Klockmannite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   17.20   43.70 
   
 420 nm   17.20   42.80 
 440 nm   17.20   41.90 
 460 nm   17.00   41.00 
 480 nm   16.90   40.00 
 500 nm   16.60   39.20 
 520 nm   16.20   38.30 
 540 nm   15.80   37.40 
 560 nm   15.10   36.60 
 580 nm   14.40   35.80 
 600 nm   13.80   35.00 
 620 nm   13.60   34.20 
 640 nm   13.80   33.20 
 660 nm   14.70   32.40 
 680 nm   16.20   31.60 
 700 nm   18.80   30.80 
Calculated Relative Intensity Colors of Klockmannite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 580%
R1                        
R2                        
 

Calculated Properties of Klockmannite

Help on Electron Density: Electron Density:

relectron=5.42 gm/cc
note: rKlockmannite =6.13 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.04211
Boson Index = 0.95789
Help on Photoelectric: Photoelectric:

PEKlockmannite = 65.16 barns/electron
U=PEKlockmannite x relectron= 353.17 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Klockmannite is Not Radioactive
 

Klockmannite Classification
Help on Dana Class: Dana Class: 2.8.12.2 (2)Sulfides - Including Selenides and Tellurides
  (2.8)where Am Bn Xp, with (m+n):p=1:1
  (2.8.12)Dana Group
 
2.8.12.1 Covellite CuS P 63/mmc 6/m 2/m 2/m
 
2.8.12.2 Klockmannite CuSe P 63/mmc 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: II/C.22-20 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.22 - Covellite series
 
II/C.22-10 Covellite CuS P 63/mmc 6/m 2/m 2/m
 
II/C.22-20 Klockmannite CuSe P 63/mmc 6/m 2/m 2/m
 
II/C.22-30 Idaite Cu5FeS6 P 63/mmc 6/m 2/m 2/m
 
II/C.22-40 Nukundamite (Cu,Fe)4S4 P 3m1 3 2/m
 

Other Klockmannite 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 Klockmannite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Klockmannite

CuSe
Dana No: 2.8.12.2 Strunz No: II/C.22-20
Locality:

 

Notes:

 
 
   
 
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