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Cupropearceite

A valid IMA mineral species
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06387670014977268241063.jpg
Cupropearceite

Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
04962200014946692771875.jpg
Cupropearceite

Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
03815480014947079033160.jpg
Cupropearceite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
00048870014946692772138.jpg
Cupropearceite

Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
00826360014946692772982.jpg
Cupropearceite

Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
07343120014946352608662.jpg
Cupropearceite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
06387670014977268241063.jpg
Cupropearceite

Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
08468890014949548909940.jpg
Cupropearceite

Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
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About CupropearceiteHide

Formula:
[Cu6As2S7][Ag9CuS4]
Colour:
Black
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
6.134 (Calculated)
Crystal System:
Trigonal
Name:
For its relationship to pearceite.
This page provides mineralogical data about Cupropearceite.


Unique IdentifiersHide

Mindat ID:
35576
Long-form identifier:
mindat:1:1:35576:6
GUID
(UUID V4):
3ce7afe6-c4eb-4dd4-9787-2f3fd4aef5fd

IMA Classification of CupropearceiteHide

IMA status:
Approved
Approval year:
2007
First published:
2007

Classification of CupropearceiteHide

Strunz-mindat (2024):
2.GB.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
B : Neso-sulfarsenites, etc. with additional S

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
CpeaIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CupropearceiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN100=112 - 128 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
None observed
Density:
6.134 g/cm3 (Calculated)
Comment:
Could not be measured due to small grain size.

Optical Data of CupropearceiteHide

Anisotropism:
Without characteristic rotation-tints.
Bireflectance:
Moderate
Reflectivity:
WavelengthR1R2
471.1nm31.7% 32.8%
548.3nm29.1% 31.5%
586.6nm28.8% 30.8%
652.3nm28.5% 29.9%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 32.8%.
R1 shown in black, R2 shown in red
Internal Reflections:
None
Pleochroism:
Weak
Comments:
Light-grey to a blue grey.

Chemistry of CupropearceiteHide

Mindat Formula:
[Cu6As2S7][Ag9CuS4]
Elements listed:
Ag, As, Cu, S - search for minerals with similar chemistry

Crystallography of CupropearceiteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 7.3218 Å, c = 11.8877 Å
Ratio:
a:c = 1 : 1.624
Unit Cell V:
551.90 ų (Calculated from Unit Cell)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0015712CupropearceiteBindi L, Pekov I V (2009) Crystal chemistry of extremely Cu-rich cupropearceite from the Sarbay mine, Northern Kazakhstan Location: Sarbay mine, Northern Kazakhstan Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva 138 44-5020090293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.89 Å(54)
3.063 Å(38)
2.972 Å(100)
2.797 Å(44)
2.476 Å(45)
2.349 Å(45)
2.168 Å(42)
1.831 Å(50)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of CupropearceiteHide

Type Locality:
ⓘ Sarbai Deposit, Rudny, Kostanay Region, Kazakhstan
General Appearance of Type Material:
Subhedral to anhedral grains up to 300 µm in size.
Place of Conservation of Type Material:
Mineralogical Collection of the Museo di Storia Naturale, Universita di Firenze, Italy.
Associated Minerals at Type Locality:
Tetrahedrite SubgroupPyriteQuartzCalcite

Synonyms of CupropearceiteHide

Other Language Names for CupropearceiteHide

Relationship of Cupropearceite to other SpeciesHide

Member of:
Pearceite-Polybasite Group
Other Members of this group:
ArgentopearceiteAg16As2S11Trig. 3 2 : P3 2 1
Argentopolybasite[Ag6Sb2S7][Ag9AgS4]Trig. 3 2 : P3 2 1
Argentopolybasite-T2acAg16Sb2S11Trig. 3 2 : P3 2 1
Benleonardite[Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1
Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m : P3 1m
Pearceite[Ag6As2S7][Ag9CuS4]Trig. 3m (3 2/m) : P3m1
Polybasite[Ag6Sb2S7][Ag9CuS4]Mon. 2/m : B2/m
Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]Trig. 3m (3 2/m) : P3m1

Common AssociatesHide

Associated Minerals Based on Photo Data:
5 photos of Cupropearceite associated with EnargiteCu3AsS4
5 photos of Cupropearceite associated with PyriteFeS2
4 photos of Cupropearceite associated with DolomiteCaMg(CO3)2
3 photos of Cupropearceite associated with Pearceite[Ag6As2S7][Ag9CuS4]
2 photos of Cupropearceite associated with Tennantite SubgroupCu6(Cu4C2+2)As4S12S
2 photos of Cupropearceite associated with Tennantite-(Zn)Cu6(Cu4Zn2)As4S12S
1 photo of Cupropearceite associated with Cupropolybasite[Cu6Sb2S7][Ag9CuS4]
1 photo of Cupropearceite associated with SilverAg
1 photo of Cupropearceite associated with CobaltiteCoAsS
1 photo of Cupropearceite associated with ChalcopyriteCuFeS2

Related Minerals - Strunz-mindat GroupingHide

2.GB.Polybasite-TacTrig. 3m (3 2/m) : P3m1
2.GB.Argentotetrahedrite-(Hg)Ag6(Cu4Hg2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Hakite-(Zn)Cu6(Cu4Zn2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.Hakite-(Cd)Cu6(Cu4Cd2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.Argentotetrahedrite-(Zn)Ag6(Cu4Zn2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Pošepnýite(Cu+3◻3)(Hg2+4Cu+2)Sb4Se12(Se0.5◻0.5)Iso. 4 3m : I4 3m
2.GB.ArgentopearceiteAg16As2S11Trig. 3 2 : P3 2 1
2.GB.Zvěstovite-(Zn)Ag6(Ag4Zn2)As4S12SIso.
2.GB.Kenoargentotennantite-(Fe)[Ag6]4+(Cu4Fe2)As4S12◻Iso.
2.GB.Tennantite-(Hg)Cu6(Cu4Hg2)As4S12SIso. 4 3m : I4 3m
2.GB.Kenoargentotetrahedrite-(Zn)[Ag6]4+(Cu4Zn2)Sb4S12◻Iso. 4 3m : I4 3m
2.GB.Tennantite-(Cu)Cu6(Cu4Cu2)As4S12SIso. 4 3m : I4 3m
2.GB.Stibiogoldfieldite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(Ni)Cu6(Cu4Ni2)As4S12SIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Ni)Cu6(Cu4Ni2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Stibioústalečite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)Se12SeIso. 4 3m : I4 3m
2.GB.Arsenogoldfieldite(Cu4Cu2)(Cu4Cu+2)(As2Te2)S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(In)Cu6(Cu4(In3+Cu+))As4S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(Cd)Cu6(Cu4Cd2)As4S12SIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Mn)Cu6(Cu4Mn2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Argentopolybasite[Ag6Sb2S7][Ag9AgS4]Trig. 3 2 : P3 2 1
2.GB.XKenorozhdestvenskayaite-(Fe)[Ag6]4+(Ag4Fe2+2)Sb4S12◻Iso. 4 3m : I4 3m
2.GB.Argentotetrahedrite-(Cd)Ag6(Cu4Cd2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(Mn)Cu6(Cu4Mn2)As4S12SIso. 4 3m : I4 3m
2.GB.Zvěstovite-(Fe)Ag6(Ag4Fe2+2)As4S12SIso. 4 3m : I4 3m
2.GB.Hakite-(Fe)Cu6(Cu4Fe2+2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Cu)Cu6(Cu4Cu2+2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Arsenoústalečite(Cu4Cu2)(Cu4Cu+2)(As2Te2)Se12SeIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Cd)Cu6(Cu4Cd2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Argentotennantite-(Zn)Ag6(Cu4Zn2)As4S12SIso. 4 3m : I4 3m
2.GB.05Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1Iso. 4 3m : I4 3m
2.GB.05Giraudite-(Zn)Cu6(Cu4Zn2)As4Se12SeIso. 4 3m : I4 3m
2.GB.05Goldfieldite(Cu4◻2)(Cu4Cu+2)Te4S12SIso. 4 3m : I4 3m
2.GB.05Hakite-(Hg)Cu6(Cu4Hg2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.05Tennantite SubgroupCu6(Cu4C2+2)As4S12SIso. 4 3m : I4 3m
2.GB.05Tetrahedrite SubgroupCu6(Cu4C2+2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Argentotetrahedrite-(Fe)Ag6(Cu4Fe2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Rozhdestvenskayaite-(Zn)Ag6(Ag4Zn2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05UM1992-21-S:AgFeSbAg6(Ag4Fe2+2)Sb4S12SIso.
2.GB.05Tennantite-(Zn)Cu6(Cu4Zn2)As4S12SIso. 4 3m : I4 3m
2.GB.05Tetrahedrite-(Zn)Cu6(Cu4Zn2)Sb4S12SIso. 4 3m : F4 3m
2.GB.05Tennantite-(Fe)Cu6(Cu4Fe2+2)As4S12SIso. 4 3m : I4 3m
2.GB.05Tetrahedrite-(Fe)Cu6(Cu4Fe2+2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Kenoargentotetrahedrite-(Fe)[Ag6]4+(Cu4Fe2+2)Sb4S12◻Iso. 4 3m : I4 3m
2.GB.05Tetrahedrite-(Hg)Cu6(Cu4Hg2)Sb4S12SIso. 4 3m : I4 3m
2.GB.10SelenostephaniteAg5SbSe4Orth. 2 2 2 : P21 21 21
2.GB.10StephaniteAg5SbS4Orth. mm2 : Cmc21
2.GB.15Pearceite[Ag6As2S7][Ag9CuS4]Trig. 3m (3 2/m) : P3m1
2.GB.15Polybasite[Ag6Sb2S7][Ag9CuS4]Mon. 2/m : B2/m
2.GB.15UM2003-14-S:AgBiFeTeAg16FeBiTe3S8
2.GB.15Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]Trig. 3m (3 2/m) : P3m1
2.GB.15Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m : P3 1m
2.GB.15UM1979-17-S:BiCuFe~Cu18Fe4BiS16
2.GB.20Galkhaite(Hg5Cu)CsAs4S12Iso. 4 3m : I4 3m
2.GB.20Vorontsovite(Hg5Cu)Σ6TlAs4S12Iso. 4 3m : I4 3m
2.GB.20Ferrovorontsovite(Fe5Cu)Σ6TlAs4S12Iso. 4 3m : I4 3m

Other InformationHide

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

Internet Links for CupropearceiteHide

References for CupropearceiteHide

Localities for CupropearceiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Catamarca Province
    • Belén Department
      • Hualfín
Márquez-Zavalía et al. (2016)
Austria
 
  • Tyrol
    • Kufstein District
      • Brixlegg
        • Reith im Alpbachtal
Kolitsch (2017)
Czech Republic
 
  • Central Bohemian Region
    • Příbram District
      • Vrančice
        • Alexander Mine
Sejkora et al. (2010)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Kolitsch et al. (2019)
  • Hesse
    • Darmstadt
      • Darmstadt-Dieburg
        • Mühltal
          • Nieder-Beerbach
Belendorff (2021)
Kazakhstan (TL)
 
  • Kostanay Region
    • Rudny
Bindi et al. (2007) +1 other reference
Kosovo
 
  • Pristina District
    • Graçanica
      • Gračanica (Graçanicë)
Mederski et al. (2023)
Morocco
 
  • Drâa-Tafilalet Region
    • Zagora Province
      • Agdz Cercle
        • Tansifte Caïdat
          • Aït Ahmane
abstract in Mitt. Österr. Mineral. ... +1 other reference
Namibia
 
  • Oshikoto Region
    • Tsumeb
Bindi et al. (2015)
Poland
 
  • Lower Silesian Voivodeship
    • Lubin County
      • Lubin
Kozub-Budzyń et al. (2018)
Russia
 
  • Khabarovsk Krai
Alekseev et al. (2015)
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