Calaverite Mineral Data

Calaverite Mineral Data
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General Calaverite 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: Usually in veins of low-temperature origin, also in moderate to high temperature deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: Staislaus mine, Carson Hill, Calaveras Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Calaverite + Pronunciation Say CALAVERITE
Help on Synonym: Synonym: ICSD 64681
  PDF 7-344
 

Calaverite Image

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Calaverite

Comments: Quartz matrix with abundant calaverite crystals.
Location: Cripple Creek, Teller County, Colorado, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Calaverite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.9863:1:2.3015
Help on Cell Dimensions: Cell Dimensions: a = 8.76, b = 4.41, c = 10.15, Z = 4; beta = 125.2° V = 320.41 Den(Calc)= 9.37
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.99(1), 2.09(0.9), 2.91(0.7),
Help on Forms: Forms:

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Forms: ( 8 0 1) ( 0 1 0) ( 3 0 4) ( 1 1 1) ( 1 0 0) ( 1 1 0) ( 0 0 1)

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Reithmayer K , Steurer W , Schulz H , de Boer J L , Acta Crystallographica, Section B , 49 (1993) p.6-11, High-pressure single-crystal structure study on calaverite, AuTe2, Locality: synthetic, Sample: P = 5.13 GPa

 

Physical Properties of Calaverite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow, Yellowish white.
Help on Density: Density: 9.04
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
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: green
 

Optical Properties of Calaverite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Color: RL Color: White.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Calaverite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   49.50   55.60 
   
 420 nm   51.50   57.50 
 440 nm   53.80   59.40 
 460 nm   55.50   61.00 
 480 nm   57.30   62.50 
 500 nm   58.80   63.80 
 520 nm   60.10   64.90 
 540 nm   61.30   65.90 
 560 nm   62.30   66.80 
 580 nm   63.10   67.60 
 600 nm   63.90   68.30 
 620 nm   64.40   68.90 
 640 nm   65.10   69.50 
 660 nm   65.60   70.00 
 680 nm   66.00   70.40 
 700 nm   66.50   70.90 
Calculated Relative Intensity Colors of Calaverite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 170%
R1                    
R2                    
 

Calculated Properties of Calaverite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.58 gm/cc
note: Specific Gravity of Calaverite =9.37 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PECalaverite = 945.97 barns/electron
U=PECalaverite x rElectron Density=7,174.61 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Calaverite is Not Radioactive
 

Calaverite Classification
Help on Dana Class: Dana Class: 02.12.13.02 (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.10 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.10 Calaverite AuTe2 C 2/m 2/m
 

Other Calaverite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Calaverite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Calaverite

AuTe2
Dana No: 02.12.13.02 Strunz No: 02.EA.10
Locality:

 

Notes: