Krutaite Mineral Data

Krutaite Mineral Data
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General Krutaite Information

Help on Chemical Formula: Chemical Formula: CuSe2
Help on Composition: Composition: Molecular Weight = 221.47 gm
   Copper    28.69 %  Cu
   Selenium  71.31 %  Se
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: CuSe2
Help on Environment: Environment: Of hydrothermal origin included in clausthalite.
Help on IMA Status: IMA Status: Approved IMA 1972
Help on Locality: Locality: Petrovice, Jihomoravský Kraj, Moravia, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Tomas Kruta, Director of the Mineralogy Laboratory, Moravian Museum, Bron, Czechoslovakia.
Help on Name Pronunciation: Name Pronunciation: Krutaite Say KRUTAITE
Help on Synonym: Synonym: ICSD 243
  PDF 26-1115
 

Krutaite Image

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Krutaite

Comments: Dark gray, metallic, octahedral crystals of krutaite on matrix.
Location: El Dragón mine, Quijarro province, Potosí, Bolivia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag
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Krutaite   Kerstenite   Clinochalcomenite

Comments: Tan opaque fibrous kerstenite with possible blue clinochalcomenite on dark krutaite.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Krutaite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 6.056, Z = 4; V = 222.10 Den(Calc)= 6.62
Help on Crystal System: Crystal System: Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.712(1), 3.023(0.9), 2.477(0.8),
Click Here for Large Krutaite Structure Window Crystal Structure:

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Milman V , Acta Crystallographica, Section B , 58 (2002) p.437-447, Klockmannite, CuSe: structure, properties and phase stability from ab initio, modeling, Locality: hypothetical structure calculated using DFT

 

Physical Properties of Krutaite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark gray
 

Optical Properties of Krutaite

Help on RL Anisotrophism: RL Anisotrophism: Zones rich in Co and Ni are anisotropic in yellow-brown tints.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Krutaite in Air
λ R  ∑ R(λ) 
 400 nm   36.00   
 420 nm   36.20 
 440 nm   36.40 
 460 nm   36.30 
 480 nm   36.10 
 500 nm   35.80 
 520 nm   35.40 
 540 nm   34.90 
 560 nm   34.30 
 580 nm   33.60 
 600 nm   33.00 
 620 nm   32.40 
 640 nm   32.00 
 660 nm   31.70 
 680 nm   31.50 
 700 nm   31.40 
Calculated Relative Intensity Colors of Krutaite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270%
R                      
 

Calculated Properties of Krutaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.80 gm/cc
note: Specific Gravity of Krutaite =6.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEKrutaite = 70.89 barns/electron
U=PEKrutaite x rElectron Density= 411.12 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krutaite is Not Radioactive
 

Krutaite Classification
Help on Dana Class: Dana Class: 02.12.01.08 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.01)Pyrite Group (Isometric: Pa3)
 
02.12.01.01 Pyrite FeS2 P a3 2/m 3
 
02.12.01.02 Vaesite NiS2 P a3 2/m 3
 
02.12.01.03 Cattierite CoS2 P a3 2/m 3
 
02.12.01.04 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3
 
02.12.01.05 Trogtalite CoSe2 P a3 2/m 3
 
02.12.01.06 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3
 
02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3
 
02.12.01.08 Krutaite CuSe2 P a3 2/m 3
 
02.12.01.09 Hauerite MnS2 P a3 2/m 3
 
02.12.01.10 Laurite RuS2 P a3 2/m 3
 
02.12.01.11 Aurostibite AuSb2 P a3 2/m 3
 
02.12.01.12 Krutovite NiAs2 P a3 2/m 3
 
02.12.01.13 Sperrylite PtAs2 P a3 2/m 3
 
02.12.01.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3
 
02.12.01.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3
 
02.12.01.16 Erlichmanite OsS2 P a3 2/m 3
 
02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3
 
02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3
 
02.12.01.19 Mayingite IrBiTe P a3 2/m 3
Help on Strunz Class: Strunz Class: 02.EB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S £ 1:2
  02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.
 
02.EB.05a Aurostibite AuSb2 P a3 2/m 3
 
02.EB.05a Cattierite CoS2 P a3 2/m 3
 
02.EB.05a Hauerite MnS2 P a3 2/m 3
 
02.EB.05a Fukuchilite Cu3FeS8 P a3 2/m 3
 
02.EB.05a Dzharkenite FeSe2 P a3 2/m 3
 
02.EB.05a Erlichmanite OsS2 P a3 2/m 3
 
02.EB.05a Geversite Pt(Sb,Bi)2 P a3 2/m 3
 
02.EB.05a Gaotaiite Ir3Te8 P a3 2/m 3
 
02.EB.05a Insizwaite Pt(Bi,Sb)2 P a3 2/m 3
 
02.EB.05a Laurite RuS2 P a3 2/m 3
 
02.EB.05a Krutaite CuSe2 P a3 2/m 3
 
02.EB.05a Pyrite FeS2 P a3 2/m 3
 
02.EB.05a Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3
 
02.EB.05a Sperrylite PtAs2 P a3 2/m 3
 
02.EB.05a Vaesite NiS2 P a3 2/m 3
 
02.EB.05a Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3
 
02.EB.05a Trogtalite CoSe2 P a3 2/m 3
 

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

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Krutaite

CuSe2
Dana No: 02.12.01.08 Strunz No: 02.EB.05a
Locality:

 

Notes: