Mineralogy Database

Tetrahedrite Mineral Data

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General Tetrahedrite Information

Help on Chemical  Formula: Chemical Formula: (Cu,Fe)12Sb4S13
Help on Composition: Composition: Molecular Weight = 1,643.31 gm
   Iron      10.20 %  Fe
   Copper    34.80 %  Cu
   Antimony  29.64 %  Sb
   Sulfur    25.37 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Cu9Fe2+3Sb4S13
Help on Environment: Environment: Hydrothermal veins and contact metamorphic deposits of low to moderate temperature.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1845
Help on Locality: Locality: Freiberg, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Name is derived from its crystal form.
Help on Name Pronunciation: Name Pronunciation: Tetrahedrite + Pronunciation Say TETRAHEDRITE
Help on Synonym: Synonym: ICSD 62116
  PDF 42-561
 

Tetrahedrite Image

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  Tetrahedrite

Comments: A very brilliant tetrahedrite group with the tops of the crystals covered in chalcopyrite.
Location: Casapalca, Lima, Peru. Scale: 8 x 6 cm.
© Fabre Minerals

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  Tetrahedrite

Comments: Bright sharp metallic tetrahedrite crystals to 1 cm in size on pinkish to colorless crystalline calcite matrix.
Location: Cavnic (Kapnik), Maramures, Romania. Scale: 14 x 11 x 3 cm.
© Dan Weinrich

Tetrahedrite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.33, Z = 2; V = 1,102.30 Den(Calc)= 4.95
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: I 43m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3(1), 1.831(0.6), 1.563(0.3),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 2 1 1)

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Physical Properties of Tetrahedrite

Help on Cleavage: Cleavage: None
Help on Color: Color: Iron gray, Black, Steel gray.
Help on Density: Density: 4.6 - 5.2, Average = 4.9
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: black
 

Optical Properties of Tetrahedrite

Help on Optical Data: Optical Data: Isotropic, n=2.72.
Help on RL Color: RL Color: Gray inclining to olive-brown.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Tetrahedrite in Air
λ R  ∑ R(λ) 
 400 nm   30.30   
 420 nm   30.90 
 440 nm   31.50 
 460 nm   31.80 
 480 nm   31.80 
 500 nm   32.00 
 520 nm   32.40 
 540 nm   32.80 
 560 nm   33.00 
 580 nm   33.00 
 600 nm   32.50 
 620 nm   31.60 
 640 nm   31.00 
 660 nm   30.80 
 680 nm   30.60 
 700 nm   30.40 
Calculated Relative Intensity Colors of Tetrahedrite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270% 280%
R                        
 

Calculated Properties of Tetrahedrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.52 gm/cc
note: Specific Gravity of Tetrahedrite =4.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0040639271
Boson Index = 0.9959360729
Help on Photoelectric: Photoelectric: PETetrahedrite = 116.02 barns/electron
U=PETetrahedrite x rElectron Density= 524.91 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tetrahedrite is Not Radioactive
 

Tetrahedrite Classification

Help on  Dana Class: Dana Class: 03.03.06.01 (03)Sulfides - Sulfosalts
  (03.03)where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.03.06)Tetrahedrite Group (Isometric: I-43m)
 
03.03.06.01 Tetrahedrite (Cu,Fe)12Sb4S13 I 43m 4 3m
 
03.03.06.02 Tennantite (Cu,Fe)12As4S13 I 43m 4 3m
 
03.03.06.03 Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 I 43m 4 3m
 
03.03.06.04 Hakite (Cu,Hg)3(Sb,As)(Se,S)3 I 43m 4 3m
 
03.03.06.05 Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 I 43m 4 3m
 
03.03.06.06 Goldfieldite Cu12(Te,Sb,As)4S13 I 43m 4 3m
 
03.03.06.07 Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 I 43m 4 3m
Help on  Strunz Class: Strunz Class: 02.GB.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
  02.GB -Neso-sulfarsenites, etc
 
02.GB.05 Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 I 43m 4 3m
 
02.GB.05 Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 I 43m 4 3m
 
02.GB.05 Goldfieldite Cu12(Te,Sb,As)4S13 I 43m 4 3m
 
02.GB.05 Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 I 43m 4 3m
 
02.GB.05 Hakite (Cu,Hg)3(Sb,As)(Se,S)3 I 43m 4 3m
 
02.GB.05 Tennantite (Cu,Fe)12As4S13 I 43m 4 3m
 
02.GB.05 Tetrahedrite (Cu,Fe)12Sb4S13 I 43m 4 3m
 

Other Tetrahedrite Information

Help on References: References: NAME( ODonoghue90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Tetrahedrite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery
19 - WWW-MINCRYST
20 - YupRocks
21 - theimage

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Print or Cut-and-Paste your Tetrahedrite Specimen Label here :

Tetrahedrite

(Cu,Fe)12Sb4S13
Dana No: 03.03.06.01 Strunz No: 02.GB.05
Locality:

 

Notes:

 

 
   
 


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