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Cupropearceite

Formula:
[Cu
 
6
As
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
System:Trigonal
Name:For its relationship to pearceite.


Polybasite group

Classification of Cupropearceite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID: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
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Type Occurrence of Cupropearceite

Type Locality:Sarbai Mine (Sarbay Mine), Rudnyi Altai, Qostaney Oblysy (Kostanai [Kustany] Oblast'), Kazakhstan

Crystallography of Cupropearceite

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:P3m1 (P3 2/m 1)
Cell Parameters:a = 7.3218Å, c = 11.8877Å
Ratio:a:c = 1 : 1.624
Unit Cell Volume:V 551.90 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
11.89 (54)
3.063 (38)
2.972 (100)
2.797 (44)
2.476 (45)
2.349 (45)
2.168 (42)

Chemical Properties of Cupropearceite

Formula:
[Cu
 
6
As
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
Essential elements:
All elements listed in formula:Ag, As, Cu, S

Relationship of Cupropearceite to other Species

Related Minerals - Nickel-Strunz Grouping):
2.GB.05Argentotennantite
(Ag,Cu)
 
10
(Zn,Fe)
 
2
(As,Sb)
 
4
S
 
13
2.GB.05Freibergite
(Ag,Cu,Fe)
 
12
(Sb,As)
 
4
S
 
13
2.GB.05Galkhaite
(Cs,Tl)(Hg,Cu,Zn)
 
6
(As,Sb)
 
4
S
 
12
2.GB.05Giraudite
(Cu,Zn,Ag)
 
12
(As,Sb)
 
4
(Se,S)
 
13
2.GB.05Goldfieldite
Cu
 
12
(Te,Sb,As)
 
4
S
 
13
2.GB.05Hakite
(Cu,Hg,Ag)
 
12
Sb
 
4
(Se,S)
 
13
2.GB.05Tennantite
(Cu,Ag,Fe,Zn)
 
12
As
 
4
S
 
13
2.GB.05Tetrahedrite
(Cu,Fe,Ag,Zn)
 
12
Sb
 
4
S
 
13
2.GB.10Selenostephanite
Ag
 
5
Sb(Se,S)
 
4
2.GB.10Stephanite
Ag
 
5
SbS
 
4
2.GB.15Pearceite
(Ag,Cu)
 
16
(As,Sb)
 
2
S
 
11
2.GB.15Polybasite
(Ag,Cu)
 
16
(Sb,As)
 
2
S
 
11
2.GB.15Selenopolybasite
[(Ag,Cu)
 
6
(Sb,As)
 
2
(S,Se)
 
7
][Ag
 
9
Cu(S,Se)
 
2
Se
 
2
2.GB.15IMA2008-004
[Cu
 
6
Sb
 
2
S
 
7
][Ag
 
9
CuS
 
4
]

Other Names for Cupropearceite

Synonyms:
IMA2007-046

Other Information

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

References for Cupropearceite

Reference List:IMA website - Proposals approved in January 2008

Internet Links for Cupropearceite

Search Engines:
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    • External Links:
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  • Look for Cupropearceite on Wikipedia
  • Look for Cupropearceite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Cupropearceite in the Natural History Museum (London) online catalogue
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    Localities for Cupropearceite

    (TL) indicates type locality. ? 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.
    Kazakhstan
     
    • Qostaney Oblysy (Kostanai [Kustany] Oblast')
      • Rudnyi Altai
    		IMA website - Proposals approved in January 2008
    Mineral and/or Locality
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