Catamarcaite Mineral Data


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General Catamarcaite Information
Help on Chemical Formula: Chemical Formula: Cu6GeWS8
Help on Composition: Composition: Molecular Weight = 894.26 gm
   Copper     42.64 %  Cu
   Germanium   8.12 %  Ge
   Tungsten   20.56 %  W
   Sulfur     28.69 %  S
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Cu6GeWS8
Help on IMA Status: IMA Status: Proposed IMA 2003 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals and Mineral Names (CNMMN)
Help on Synonym: Synonym: IMA2003-020
 

Catamarcaite Image

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Catamarcaite   Putzite

Comments: Polished section of putzite (pu) grain in close association with unnamed Cu8Fe2ZnGe2S12 (un1) and catamarcaite (ca), as inclusions in chalcocite-sphalerite (cc/sp) (CanMin 42:1761).
Location: Old dumps near the Rosario vein, Capillitas mining district, Department of Andalgal?, Catamarca Province, Argentina.. Scale: See Image.
© Canadian Mineralogist

Catamarcaite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.64615
Help on Cell Dimensions: Cell Dimensions: a = 7.523, c = 12.384, Z = 4; V = 606.98 Den(Calc)= 9.79
Help on Crystal System: Crystal System: HexagonalSpace Group: P 63/mmc, P 62c or P 63mc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.78(1), 1.881(0.8), 1.744(0.5),1.971(0.5), 2.417(0.4), 2.887(0.4), 3.153(0.4), 6.18(0.4),
 

Physical Properties of Catamarcaite

Help on Color: Color: Gray.
Help on Diaphaniety: Diaphaniety: Opaque
Help on Luster: Luster: Metallic
 

Optical Properties of Catamarcaite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Bireflectance: RL Bireflectance: Weak.
Help on RL Color: RL Color: Grayish white with a distinct brownish tine with red internal reflections.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Catamarcaite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   24.50   25.20 
   
 546 nm   24.10   24.50 
 589 nm   24.50   25.10 
 650 nm   23.40   23.70 
Calculated Relative Intensity Colors of Catamarcaite in Air
Relative
Intensity		    0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360% 370%
R1                        
R2                        
 

Calculated Properties of Catamarcaite

Help on Electron Density: Electron Density:

relectron=8.93 gm/cc
note: rCatamarcaite =9.79 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.03784
Boson Index = 0.96216
Help on Photoelectric: Photoelectric:

PECatamarcaite = 269.52 barns/electron
U=PECatamarcaite x relectron=2,407.70 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Catamarcaite is Not Radioactive
 

Catamarcaite Classification
Help on Dana Class: Dana Class: 2.9.14.2 (2)Sulfides - Including Selenides and Tellurides
  (2.9)where Am Bn Xp, with (m+n):p=1:1
  (2.9.14)Dana Group
 
2.9.14.1 Idaite Cu5FeS6 P 63/mmc 6/m 2/m 2/m
 
2.9.14.2 Catamarcaite ! Cu6GeWS8 P 63/mmc, P 62c or P 63mc Hex
Help on Strunz Class: Strunz Class: II/X.00-00 II - Sulfides and sulphosalts
  II/X - Unclassified Strunz Sulfides and sulphosalts
  II/X.00 - Sulfide
 

Other Catamarcaite Information
Help on See Also: See Also: Links to other databases for Catamarcaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Catamarcaite

Cu6GeWS8
Dana No: 2.9.14.2 Strunz No: II/X.00-00
Locality:

 

Notes:

 
 
   
 
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