Mineralogy Database

Krennerite Mineral Data

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General Krennerite Information

Help on Chemical Formula: Chemical Formula: AuTe2
Help on Composition: Composition: Molecular Weight = 452.17 gm
   Tellurium  56.44 %  Te
   Gold       43.56 %  Au
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: AuTe2
Help on Environment: Environment: Found in hydrothermal veins with other tellurides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1877
Help on Locality: Locality: Sacar�mb (Nagy�g, Szekerembe), Transylvania, Romania. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Joseph A. Krenner (1839-1920), Hungarian mineralogist.
Help on Name Pronunciation: Name Pronunciation: Krennerite + Pronunciation Say KRENNERITE
Help on Synonym: Synonym: ICSD 30902
  PDF 20-Aug
 

Krennerite Image

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  Krennerite

Comments: Metallic krennerite crystals on quartz.
Location: Emperor mine, Vatukoula, Viti Levu, Fiji. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Krennerite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.8752:1:0.5056
Help on Cell Dimensions: Cell Dimensions: a = 16.54, b = 8.82, c = 4.46, Z = 8; V = 650.64 Den(Calc)= 9.23
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pma2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.03(1), 2.11(0.7), 2.94(0.6),
Help on Forms: Forms:

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Help on Above

Forms: ( 0 2 1) ( 1 1 1) ( 0 1 0) ( 1 2 0) ( 1 0 1) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Krennerite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: White, Blackish yellow.
Help on Density: Density: 8.53
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Streak: Streak: greenish gray
 

Optical Properties of Krennerite

Help on RL Anisotrophism: RL Anisotrophism: Strong, to dark brown.
Help on RL Color: RL Color: Creamy white.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Krennerite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   47.40   52.30 
   
 420 nm   50.20   54.70 
 440 nm   53.00   57.10 
 460 nm   55.50   59.00 
 480 nm   57.50   60.40 
 500 nm   58.80   61.30 
 520 nm   59.80   62.00 
 540 nm   60.40   62.40 
 560 nm   60.90   62.80 
 580 nm   61.10   63.00 
 600 nm   61.50   63.40 
 620 nm   62.00   63.90 
 640 nm   62.30   64.40 
 660 nm   62.60   64.80 
 680 nm   62.80   65.20 
 700 nm   62.80   65.50 
Calculated Relative Intensity Colors of Krennerite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 170%
R1                    
R2                    
 

Calculated Properties of Krennerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.47 gm/cc
note: Specific Gravity of Krennerite =9.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEKrennerite = 945.97 barns/electron
U=PEKrennerite x rElectron Density=7,067.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krennerite is Not Radioactive
 

Krennerite Classification
Help on Dana Class: Dana Class: 02.12.13.01 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.13)Krennerite Group
 
02.12.13.01 Krennerite AuTe2 Pma2 mm2
 
02.12.13.02 Calaverite AuTe2 C 2/m 2/m
 
02.12.13.03 Sylvanite (Au,Ag)2Te4 P 2/c 2/m
 
02.12.13.04 Kostovite CuAuTe4 Pma2 mm2
Help on Strunz Class: Strunz Class: 02.EA.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S � 1:2
  02.EA -M:S = 1:2
 
02.EA.15 Krennerite AuTe2 Pma2 mm2
 
02.EA.15 Kostovite CuAuTe4 Pma2 mm2
 

Other Krennerite 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 Krennerite :
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 - HyperPhysics
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Krennerite

AuTe2
Dana No: 02.12.13.01 Strunz No: 02.EA.15
Locality:

 

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