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Krutaite Mineral Data
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General Krutaite Information
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 Chemical Formula: |
CuSe2 |
| Composition: |
Molecular Weight = 221.47 gm |
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Copper 28.69 % Cu |
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Selenium 71.31 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
CuSe2 |
| Environment: |
Of hydrothermal origin included in clausthalite. |
| IMA Status: |
Approved IMA 1972 |
| Locality: |
Petrovice, Jihomoravsk� Kraj, Moravia, Czech Republic. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Tomas Kruta, Director of the Mineralogy Laboratory, Moravian Museum, Bron, Czechoslovakia. |
| Name Pronunciation: |
Krutaite  |
| Synonym: |
ICSD 243 |
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PDF 26-1115 |
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Krutaite Image |
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Images:
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Krutaite
Comments: Dark gray, metallic, octahedral crystals of krutaite on matrix.
Location: El Dragón mine, Quijarro province, PotosÃ, Bolivia.
Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag |
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Images:
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Krutaite Crystallography
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| Cell Dimensions: |
a = 6.056, Z = 4; V = 222.10 Den(Calc)= 6.62 |
| Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.712(1), 3.023(0.9), 2.477(0.8), |
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Physical Properties of Krutaite
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| Cleavage: |
{???} Good |
| Color: |
Gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Inclusions - Generally found as inclusions in other minerals. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
| Streak: |
dark gray |
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Optical Properties of Krutaite
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| RL Anisotrophism: |
Zones rich in Co and Ni are anisotropic in yellow-brown tints. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Krutaite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
36.00 |
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| 420 nm |
36.20 |
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| 440 nm |
36.40 |
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| 460 nm |
36.30 |
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| 480 nm |
36.10 |
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| 500 nm |
35.80 |
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| 520 nm |
35.40 |
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| 540 nm |
34.90 |
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| 560 nm |
34.30 |
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| 580 nm |
33.60 |
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| 600 nm |
33.00 |
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| 620 nm |
32.40 |
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| 640 nm |
32.00 |
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| 660 nm |
31.70 |
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| 680 nm |
31.50 |
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| 700 nm |
31.40 |
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Calculated Relative Intensity Colors of Krutaite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
270% |
| R |
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Calculated Properties of Krutaite
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| Electron Density: |
Bulk Density (Electron Density)=5.80 gm/cc
note: Specific Gravity of Krutaite =6.62 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEKrutaite = 70.89 barns/electron
U=PEKrutaite x rElectron Density= 411.12 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krutaite is Not Radioactive |
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Krutaite Classification
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| Dana Class: |
02.12.01.08 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.01)Pyrite Group (Isometric: Pa3) |
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02.12.01.01 Pyrite FeS2 P a3 2/m 3 |
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02.12.01.02 Vaesite NiS2 P a3 2/m 3 |
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02.12.01.03 Cattierite CoS2 P a3 2/m 3 |
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02.12.01.04 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3 |
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02.12.01.05 Trogtalite CoSe2 P a3 2/m 3 |
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02.12.01.06 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3 |
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02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3 |
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02.12.01.08 Krutaite CuSe2 P a3 2/m 3 |
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02.12.01.09 Hauerite MnS2 P a3 2/m 3 |
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02.12.01.10 Laurite RuS2 P a3 2/m 3 |
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02.12.01.11 Aurostibite AuSb2 P a3 2/m 3 |
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02.12.01.12 Krutovite NiAs2 P a3 2/m 3 |
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02.12.01.13 Sperrylite PtAs2 P a3 2/m 3 |
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02.12.01.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3 |
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02.12.01.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3 |
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02.12.01.16 Erlichmanite OsS2 P a3 2/m 3 |
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02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3 |
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02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3 |
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02.12.01.19 Mayingite IrBiTe P a3 2/m 3 |
| Strunz Class: |
02.EB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.05a Aurostibite AuSb2 P a3 2/m 3 |
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02.EB.05a Cattierite CoS2 P a3 2/m 3 |
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02.EB.05a Hauerite MnS2 P a3 2/m 3 |
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02.EB.05a Fukuchilite Cu3FeS8 P a3 2/m 3 |
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02.EB.05a Dzharkenite FeSe2 P a3 2/m 3 |
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02.EB.05a Erlichmanite OsS2 P a3 2/m 3 |
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02.EB.05a Geversite Pt(Sb,Bi)2 P a3 2/m 3 |
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02.EB.05a Gaotaiite Ir3Te8 P a3 2/m 3 |
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02.EB.05a Insizwaite Pt(Bi,Sb)2 P a3 2/m 3 |
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02.EB.05a Laurite RuS2 P a3 2/m 3 |
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02.EB.05a Krutaite CuSe2 P a3 2/m 3 |
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02.EB.05a Pyrite FeS2 P a3 2/m 3 |
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02.EB.05a Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3 |
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02.EB.05a Sperrylite PtAs2 P a3 2/m 3 |
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02.EB.05a Vaesite NiS2 P a3 2/m 3 |
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02.EB.05a Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3 |
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02.EB.05a Trogtalite CoSe2 P a3 2/m 3 |
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Other Krutaite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| 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 - 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
15 - WWW-MINCRYST
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Krutaite
CuSe2
Dana No: 02.12.01.08 Strunz No: 02.EB.05a
Locality:
Notes:
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