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Famatinite Mineral Data

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General Famatinite Information

Help on Chemical  Formula: Chemical Formula: Cu3SbS4
Help on Composition: Composition: Molecular Weight = 440.65 gm
   Copper    43.26 %  Cu
   Antimony  27.63 %  Sb
   Sulfur    29.11 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Cu3SbS4
Help on Environment: Environment: Antimony (Sb) analog of enargite (arsenic-As).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1873
Help on Locality: Locality: Sierra de Famatina, La Rioja, Argentina. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Famatinite + Pronunciation Say FAMATINITE
Help on Synonym: Synonym: ICSD 2857
  PDF 35-581

Famatinite Image

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  Famatinite   Enargite

Comments: Violet metallic crystalline famatinite with black massive enargite.
Location: Cerro de Pasco, Pasco, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Comments: Dark, purplish black, massive famatinite.
Location: Tertiary volcanic massif, the Serrania de Laurani, Bolivia. Scale: Picture size 2 cm.
© Dave Barthelmy

Famatinite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.99585
Help on Cell Dimensions: Cell Dimensions: a = 5.3853, c = 10.7483, Z = 2; V = 311.72 Den(Calc)= 4.69
Help on Crystal System: Crystal System: Tetragonal - Scalenohedral H-M Symbol (4 2m) Space Group: I 42m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.108(1), 1.902(0.65), 1.6233(0.35),

Physical Properties of Famatinite

Help on Cleavage: Cleavage: {101} Good, {100} Distinct
Help on Color: Color: Grayish black, Dark pink brown, Steel gray.
Help on Density: Density: 4.57
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 3-4 - Calcite-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 Famatinite

Help on RL Anisotrophism: RL Anisotrophism: Strong, greenish yellow and purplish red.
Help on RL Color: RL Color: Pale brownish pink.
Help on RL Pleochroism: RL Pleochroism: Weak, light orange, pink-violet.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Famatinite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   24.40   30.00 
 420 nm   24.20   25.50 
 440 nm   24.00   25.00 
 460 nm   23.80   24.10 
 480 nm   23.10   23.40 
 500 nm   22.70   23.10 
 520 nm   22.90   23.60 
 540 nm   23.80   25.00 
 560 nm   24.30   26.00 
 580 nm   24.50   26.50 
 600 nm   24.80   27.00 
 620 nm   25.40   27.50 
 640 nm   26.00   28.10 
 660 nm   26.80   28.60 
 680 nm   27.30   29.00 
 700 nm   27.50   29.40 
Calculated Relative Intensity Colors of Famatinite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360% 370%

Calculated Properties of Famatinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.30 gm/cc
note: Specific Gravity of Famatinite =4.69 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0021830832
Boson Index = 0.9978169168
Help on Photoelectric: Photoelectric: PEFamatinite = 110.11 barns/electron
U=PEFamatinite x rElectron Density= 473.47 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Famatinite is Not Radioactive

Famatinite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.02)where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.02.02)Luzonite Group Luzonite Cu3AsS4 I 42m 4 2m Famatinite Cu3SbS4 I 42m 4 2m Permingeatite Cu3SbSe4 I 42m 4 2m
Help on  Strunz Class: Strunz Class: 02.KA.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.K - Sulfarsenates, Sulfantimonates
  02.KA -Sulfarsenates with (As,Sb)S4 tetrahedra
02.KA.10 Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m
02.KA.10 Barquillite! Cu2CdGeS4 I 42m 4 2m
02.KA.10 Famatinite Cu3SbS4 I 42m 4 2m
02.KA.10 Luzonite Cu3AsS4 I 42m 4 2m
02.KA.10 Permingeatite Cu3SbSe4 I 42m 4 2m

Other Famatinite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Famatinite :
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

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Dana No: Strunz No: 02.KA.10





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