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Catamarcaite Mineral Data
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General Catamarcaite Information
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 Chemical Formula: |
Cu6GeWS8 |
| Composition: |
Molecular Weight = 902.31 gm |
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Iron 0.19 % Fe |
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Copper 42.89 % Cu |
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Silver 0.12 % Ag |
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Germanium 7.89 % Ge |
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Tungsten 20.99 % W |
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Sulfur 27.93 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu6.09Ag0.01Fe3+0.03Ge0.98W1.03S7.86 |
| Environment: |
Occurs as a thin rim lining cavities and fractures in chalcocite-bornite ore. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the locality. |
| Synonym: |
IMA2003-020 |
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Catamarcaite Image |
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Images:
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Putzite Catamarcaite
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 Andalgalá, Catamarca Province, Argentina..
Scale: See Image.
© Canadian Mineralogist |
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Images:
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Catamarcaite
Comments: Fractured aggregate of catamarcaite (Ct) composed of twinned grains with red internal reflections; Dg is digenite, Sp sphalerite. Oil immersion, crossed polars. (CanMin, v44:1481).
Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina.
Scale: See Image.
© Canadian Mineralogist |
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Images:
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Briartite Catamarcaite Bornite
Comments: Briartite-type phase (Bri) in close association with catamarcaite (Ct) lining a cavity in massive bornite (Bn) - chalcocite (Cc) ore; Sp is sphalerite (CanMin v44:1481).
Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina..
Scale: See Image.
© Canadian Mineralogist |
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Images:
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Luzonite Catamarcaite
Comments: Catamarcaite (Ct) in contact with luzonite (Luz), unnamed Cu8Fe2ZnGe2S12 (un), sphalerite (Sp) and fine-grained chalcocite - covellite (Cc/Cv). (CanMin v44:1481).
Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina.
Scale: See Image.
© Canadian Mineralogist |
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Catamarcaite Crystallography
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| Axial Ratios: |
a:c = 1:1.64677 |
| Cell Dimensions: |
a = 7.5238, c = 12.39, Z = 2; V = 607.40 Den(Calc)= 4.93 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 5.767(1)(011), 1.881(0.48)(220), 3.151(0.35)(021),2.884(0.28)(022), 1.744(0.26)(026), 2.416(0.26)(121), 3.215(0.25)(112), 1.972(0.24)(025), |
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Physical Properties of Catamarcaite
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| Cleavage: |
None |
| Color: |
Gray. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Irregular - Very brittle fracture producing irregular fragments |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Catamarcaite
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| RL Anisotrophism: |
Weak in shades of gray. |
| RL Bireflectance: |
Very weak in oil, absent in air. |
| RL Color: |
Grayish white with a distinct brownish tine with red internal reflections. |
| RL Pleochroism: |
None. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Catamarcaite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
24.30 |
25.00 |
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| 420 nm |
24.50 |
25.30 |
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| 440 nm |
24.60 |
25.30 |
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| 460 nm |
24.50 |
25.20 |
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| 470 nm |
24.50 |
25.20 |
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| 480 nm |
24.40 |
25.10 |
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| 500 nm |
24.20 |
24.70 |
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| 520 nm |
24.10 |
24.50 |
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| 540 nm |
24.10 |
24.50 |
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| 546 nm |
24.10 |
24.50 |
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| 560 nm |
24.40 |
24.80 |
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| 580 nm |
24.50 |
25.10 |
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| 589 nm |
24.50 |
25.10 |
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| 600 nm |
24.50 |
25.00 |
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| 620 nm |
24.00 |
24.50 |
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| 640 nm |
23.60 |
23.90 |
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| 650 nm |
23.40 |
23.70 |
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| 660 nm |
23.10 |
23.30 |
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| 680 nm |
22.60 |
22.80 |
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| 700 nm |
22.20 |
22.40 |
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Standardized Intensity (100%) Reflection Spectra of Catamarcaite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
10.40 |
10.90 |
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| 420 nm |
10.40 |
10.80 |
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| 440 nm |
10.60 |
11.10 |
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| 460 nm |
10.60 |
11.10 |
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| 470 nm |
10.50 |
11.10 |
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| 480 nm |
10.40 |
10.90 |
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| 500 nm |
10.20 |
10.50 |
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| 520 nm |
10.10 |
10.30 |
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| 540 nm |
10.20 |
10.30 |
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| 546 nm |
10.20 |
10.40 |
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| 560 nm |
10.30 |
10.60 |
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| 580 nm |
10.50 |
10.90 |
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| 589 nm |
10.50 |
10.80 |
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| 600 nm |
10.40 |
10.80 |
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| 620 nm |
10.30 |
10.50 |
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| 640 nm |
9.80 |
10.00 |
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| 650 nm |
9.70 |
9.80 |
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| 660 nm |
9.50 |
9.70 |
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| 680 nm |
9.10 |
9.20 |
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| 700 nm |
9.00 |
9.00 |
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Calculated Relative Intensity Colors of Catamarcaite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
360% |
370% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Catamarcaite in Oil
Relative
Intensity |
0% |
90% |
100% |
180% |
270% |
360% |
450% |
540% |
630% |
720% |
810% |
880% |
| R1 |
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| R2 |
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Calculated Properties of Catamarcaite
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| Electron Density: |
Bulk Density (Electron Density)=4.49 gm/cc
note: Specific Gravity of Catamarcaite =4.93 gm/cc.
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| Fermion Index: |
Fermion Index = 0.03
Boson Index = 0.97 |
| Photoelectric: |
PECatamarcaite = 275.18 barns/electron
U=PECatamarcaite x rElectron Density=1,236.49 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Catamarcaite is Not Radioactive |
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Catamarcaite Classification
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| Dana Class: |
02.09.14.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.09)where Am Bn Xp, with (m+n):p=1:1 |
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(02.09.14)Dana Group |
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02.09.14.01 Idaite Cu5FeS6 P 63/mmc 6/m 2/m 2/m |
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02.09.14.02 Catamarcaite! Cu6GeWS8 P 63mc 6/m 2/m 2/m |
| Strunz Class: |
02.CB.35a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.35a Hemusite Cu6SnMoS8 Unk Cubic |
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02.CB.35a Kiddcreekite Cu6SnWS8 Unk Cubic |
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02.CB.35a Renierite (Cu,Zn)11(Ge,As)2Fe4S16 P 42c- 4 2m |
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02.CB.35a Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 F d3m 4/m 3 2/m |
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02.CB.35a Morozeviczite (Pb,Fe)3Ge1-xS4 F d3m 4/m 3 2/m |
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02.CB.35a Catamarcaite! Cu6GeWS8 P 63mc 6/m 2/m 2/m |
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02.CB.35a Vinciennite Cu10Fe4Sn(As,Sb)S16 P 4122 4 2 2 |
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Other Catamarcaite Information
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| References: |
NAME( CanMin, v44:1481) PHYS. PROP.(CanMin, v44:1481) OPTIC PROP.(CanMin, v44:1481) |
| See Also: |
Links to other databases for Catamarcaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Catamarcaite
Cu6GeWS8
Dana No: 02.09.14.02 Strunz No: 02.CB.35a
Locality:
Notes:
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