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Catamarcaite

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Formula:
Cu6GeWS8
System:
Hexagonal
Colour:
Grey
Hardness:
Name:
After the Province of Catamarca, where the new mineral species was found.
This page provides mineralogical data about Catamarcaite.

Classification of Catamarcaite

Approved 2003
2.CB.35b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
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http://www.mindat.org/min-27224.html
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Type Occurrence of Catamarcaite

General Appearance of Type Material:
Thin rims lining cavities and fractures in chalcocite–bornite ore, and aggregates, up to 1 mm in size, composed of anhedral to subhedral, intensely twinned grains within digenite – chalcocite – sphalerite ore.

Physical Properties of Catamarcaite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Grey
Streak:
Black
Hardness (Mohs):
Hardness (Vickers):
VHN25=193 - 264 kg/mm2
Tenacity:
Brittle
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
4.892 g/cm3 (Calculated)
Comment:
Calculated for ideal composition

Crystallography of Catamarcaite

Crystal System:
Hexagonal
Class (H-M):
6mm - Dihexagonal Pyramidal
Space Group:
P63mc
Cell Parameters:
a = 7.5238Å, c = 12.39Å
Ratio:
a:c = 1 : 1.647
Unit Cell Volume:
V 607.4 ų
Z:
2
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.767 (100)
3.215 (25)
3.151 (35)
2.884 (28)
2.416 (26)
1.972 (24)
1.881 (48)
1.744 (26)

Optical Data of Catamarcaite

Type:
Anisotropic
Anisotropism:
weak
Bireflectance:
absent in air, very weak in oil
Reflectivity:
470 nmR1=24.5%R2=25.2%
546 nmR1=24.1%R2=24.5%
589 nmR1=24.5%R2=25.1%
650 nmR1=23.4%R2=23.7%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 25.2%.
R1 shown in black, R2 shown in red
Colour in reflected light:
greyish white with a distinct brownish tint
Internal Reflections:
red (occasionally observed along fractures)
Pleochroism:
Non-pleochroic

Chemical Properties of Catamarcaite

Formula:
Cu6GeWS8
All elements listed in formula:
Analytical Data:
Average results of 34 electron-microprobe analyses
Formula calculated on the basis of a total of 16 atoms
Cu  (42.72)
Ag   (0.14)
Fe   (0.17)
Ge   (7.84)
W   (20.89)
S   (27.79)

sum  99.55 wt.-%
Empirical Formula:
Cu6.09Ag0.01Fe0.03Ge0.98W1.03S7.86
Common Impurities:
Ag,Fe

Relationship of Catamarcaite to other Species

2.CB.05aColoradoiteHgTe
2.CB.05aHawleyiteCdS
2.CB.05aMetacinnabarHgS
2.CB.05cPolhemusite(Zn,Hg)S
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4
2.CB.05aSphaleriteZnS
2.CB.05aStilleiteZnSe
2.CB.05aTiemanniteHgSe
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)S
2.CB.10aChalcopyriteCuFeS2
2.CB.10aEskeborniteCuFeSe2
2.CB.10aGalliteCuGaS2
2.CB.10bHaycockiteCu4Fe5S8
2.CB.10aLenaiteAgFeS2
2.CB.10bMooihoekiteCu9Fe9S16
2.CB.10bPutoraniteCu9(Fe,Ni)9S16
2.CB.10aRoquesiteCuInS2
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16
2.CB.10aLaforêtiteAgInS2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4
2.CB.15aFerrokësteriteCu2(Fe,Zn)SnS4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4
2.CB.15aIdaiteCu5FeS6
2.CB.15aKësteriteCu2(Zn,Fe)SnS4
2.CB.15aKuramiteCu3SnS4
2.CB.15bMohiteCu2SnS3
2.CB.15aPirquitasiteAg2ZnSnS4
2.CB.15aStanniteCu2(Fe,Zn)SnS4
2.CB.15cStannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
2.CB.15aVelikiteCu2HgSnS4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8
2.CB.20MawsoniteCu6Fe2SnS8
2.CB.30ColusiteCu12VAs3S16
2.CB.30GermaniteCu13Fe2Ge2S16
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32
2.CB.30StibiocolusiteCu13V4(Sb,Sn,As)3S16
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32
2.CB.35aHemusiteCu6SnMoS8
2.CB.35aKiddcreekiteCu6SnWS8
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4
2.CB.35aRenierite(Cu,Zn)11(Ge,As)2Fe4S16
2.CB.35aVincienniteCu7+Cu32+Fe22+Fe23+Sn(As,Sb)S16
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4
2.CB.40LautiteCuAsS
2.CB.45CadmoseliteCdSe
2.CB.45GreenockiteCdS
2.CB.45Wurtzite(Zn,Fe)S
2.CB.45RambergiteMnS
2.CB.45Buseckite(Fe,Zn,Mn)S
2.CB.55aCubaniteCuFe2S3
2.CB.55bIsocubaniteCuFe2S3
2.CB.60PicotpauliteTlFe2S3
2.CB.60RaguiniteTlFeS2
2.CB.65ArgentopyriteAgFe2S3
2.CB.65SternbergiteAgFe2S3
2.CB.70SulvaniteCu3VS4
2.CB.75VulcaniteCuTe
2.CB.80EmpressiteAgTe
2.CB.85MuthmanniteAuAgTe2

Other Names for Catamarcaite

Name in Other Languages:
Simplified Chinese:硫钨锗铜矿
Traditional Chinese:硫鎢鍺銅礦

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Catamarcaite

Reference List:
Putz, H., Paar, W. H., Topa, D., Makovický, E., Roberts, A. C. (2006): Catamarcaite, Cu6GeWS8, a new species of germanium–tungsten sulfide from Capillitas, Catamarca, Argentina: description, paragenesis and crystal structure. Canadian Mineralogist, 44, 1481-1497.

Internet Links for Catamarcaite

Localities for Catamarcaite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Argentina (TL)
 
  • Catamarca
    • Andalgalá Department
Paar, W., Roberts, A.C., Topa, D., Zagler, G., Berlepsch, P., Armbruster, Th. (2004): Putzite, (Cu4.7 Ag3.3)GeS6, a new mineral species from Capillitas, Catamarca, Argentina: description and crystal structure. Canadian Mineralogist: 42: 1757-1769. ; DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
PUTZ, Hubert; PAAR, Werner H and TOPA, Dan. A contributionto the knowledge of the mineralization at mina Capillitas, Catamarca. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 514-524.
Mineral and/or Locality  
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