Krutaite Mineral Data (original) (raw)

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, Jihomoravsk� 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

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

Click Here for Larger Krutaite Image 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 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

RelativeIntensity 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 - 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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Print or Cut-and-Paste your Krutaite Specimen Label here :

Krutaite

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

Notes: