Tetrahedrite Mineral Data + Say TETRAHEDRITE

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 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 - HextetrahedralH-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:

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Forms: [ 2 1 1]

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Johnson M L , Burnham C W , American Mineralogist , 70 (1985) p.165-170, Crystal structure refinement of an arsenic-bearing argentian tetrahedrite

View Additional jPOWD Structure files for Tetrahedrite
[1] [2] [3] [4] [5] [6] [7]
 

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 Diaphaniety: Diaphaniety: 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: None.
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:

relectron=4.52 gm/cc
note: rTetrahedrite =4.95 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00406
Boson Index = 0.99594
Help on Photoelectric: Photoelectric:

PETetrahedrite = 116.02 barns/electron
U=PETetrahedrite x relectron= 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: 3.3.6.1 (3)Sulfides - Sulfosalts
  (3.3)where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (3.3.6)Tetrahedrite Group (Isometric: I4¯3m)
 
3.3.6.1 Tetrahedrite (Cu,Fe)12Sb4S13 I 43m 4 3m
 
3.3.6.2 Tennantite (Cu,Fe)12As4S13 I 43m 4 3m
 
3.3.6.3 Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 I 43m 4 3m
 
3.3.6.4 Hakite (Cu,Hg)3(Sb,As)(Se,S)3 I 43m 4 3m
 
3.3.6.5 Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 I 43m 4 3m
 
3.3.6.6 Goldfieldite Cu12(Te,Sb,As)4S13 I 43m 4 3m
 
3.3.6.7 Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 I 43m 4 3m
Help on Strunz Class: Strunz Class: II/C.11-40 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.11 - Tetrahedrite group
 
II/C.11-10 Tennantite (Cu,Fe)12As4S13 I 43m 4 3m
 
II/C.11-20 Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 I 43m 4 3m
 
II/C.11-30 Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 I 43m 4 3m
 
II/C.11-40 Tetrahedrite (Cu,Fe)12Sb4S13 I 43m 4 3m
 
II/C.11-50 Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 I 43m 4 3m
 
II/C.11-60 Goldfieldite Cu12(Te,Sb,As)4S13 I 43m 4 3m
 
II/C.11-70 Hakite (Cu,Hg)3(Sb,As)(Se,S)3 I 43m 4 3m
 
II/C.11-75 Mgriite Cu3AsSe3 F d3m 4/m 3 2/m
 
II/C.11-80 Chameanite (Cu,Fe)4As(Se,S)4 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 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - Franklin Minerals(Dunn) 9 -Google Images 10 -Google Scholar 11 -Handbook of Mineralogy (UofA) 12 - HyperPhysics 13 -MinDAT 14 -MinMax(Deutsch) 15 -MinMax(English) 16 -Mineralienatlas (Deutsch) 17 -QUT Mineral Atlas 18 - Scandinavian mineral gallery 19 - WWW-MINCRYST 20 - YupRocks 21 -theimage

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Tetrahedrite

(Cu,Fe)12Sb4S13
Dana No: 3.3.6.1 Strunz No: II/C.11-40
Locality:

 

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