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Selenopolybasite

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About SelenopolybasiteHide

Formula:
[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Crystal System:
Trigonal
Name:
Selenium analogue of polybasite.
The Se analogue of polybasite.


Classification of SelenopolybasiteHide

Approved
Approval Year:
2006
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
3.1.7.2

3 : SULFOSALTS
1 : ø > 4

Chemical Properties of SelenopolybasiteHide

Formula:
[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
IMA Formula:
Cu(Ag,Cu)6Ag9Sb2(S,Se)9Se2

Crystallography of SelenopolybasiteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Selenopolybasite-Tac
 
Trigonal 
3m (3 2/m) - Hexagonal Scalenohedral
P3m1
 
a = 7.5950(4) Å, c = 12.0731(6) Å
a:c = 1 : 1.59
V 603.12 ų
(Calculated from Unit Cell)
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.1731 (48)
3.0183 (84)
2.8880 (100)
2.5466 (23)
2.3629 (34)
2.2237 (28)
1.8987 (31)

Type Occurrence of SelenopolybasiteHide

Synonyms of SelenopolybasiteHide

Other Language Names for SelenopolybasiteHide

Simplified Chinese:硒硫碲铜银矿

Relationship of Selenopolybasite to other SpeciesHide

Other Members of this group:
Benleonardite[Ag6(Sb,As)2S6Te] [Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1
Cupropearceite[Cu6As2S7][Ag9CuS4]Trig. 3m (3 2/m) : P3m1
Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m : P3 1m
Pearceite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]Trig. 3m (3 2/m) : P3m1
Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]Mon. 2/m : B2/m

Related Minerals - Nickel-Strunz GroupingHide

2.GB.05ArgentotennantiteAg6[Cu4(Fe,Zn)2]As4S13Iso. 4 3m : I4 3m
2.GB.05FreibergiteAg6[Cu4Fe2]Sb4S13-xIso. 4 3m : I4 3m
2.GB.05GirauditeCu6[Cu4(Fe,Zn)2]As4Se13Iso. 4 3m : I4 3m
2.GB.05GoldfielditeCu10Te4S13Iso. 4 3m : I4 3m
2.GB.05HakiteCu6[Cu4Hg2]Sb4Se13Iso. 4 3m : I4 3m
2.GB.05TennantiteCu6[Cu4(Fe,Zn)2]As4S13Iso. 4 3m : I4 3m
2.GB.05TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13Iso. 4 3m : I4 3m
2.GB.10SelenostephaniteAg5Sb(Se,S)4Orth.
2.GB.10StephaniteAg5SbS4Orth. mm2 : Cmc21
2.GB.15Pearceite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]Trig. 3m (3 2/m) : P3m1
2.GB.15Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]Mon. 2/m : B2/m
2.GB.15UM2003-14-S:AgBiFeTeAg16FeBiTe3S8
2.GB.15Cupropearceite[Cu6As2S7][Ag9CuS4]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(Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12Iso. 4 3m : I4 3m

Related Minerals - Dana Grouping (8th Ed.)Hide

3.1.7.2Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]Mon. 2/m : B2/m
3.1.7.3Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m : P3 1m

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.

References for SelenopolybasiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bindi, L., Evain, M., Spry, P.G., Menchetti, S. (2007): The pearceite-polybasite group of minerals: Crystal chemistry and new nomenclature rules. American Mineralogist, 92, 918-925.
Bindi, L., Evain, M., Menchetti, S. (2007): Selenopolybasite, [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2], a new member of the pearceite–polybasite group from the De Lamar mine, Owyhee County, Idaho, USA. Canadian Mineralogist, 45, 1525-1528.

Internet Links for SelenopolybasiteHide

Localities for SelenopolybasiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Zhejiang Province
    • Lishui Prefecture
      • Suichang Co.
        • Suichang gold mine
Zhenkuan Luo, Guiming Hu, and Kang Guan (1985): Mineral Deposits 4(4), 47-55
Mexico
 
  • Guanajuato
    • Mun. de Guanajuato
      • Guanajuato
Gunnar Färber
      • La Luz
[Selenopolybasite-Tac] Am Min 92:918-925
  • Guerrero
Brent Thorne specimen. Acquired from Joy Desor who analyzed the specimen by EDS.
Russia
 
  • Far-Eastern Region
    • Magadanskaya Oblast'
      • Engteri ore cluster
Palyanova, G.A., Savva, N.E., Zhuravkova, T.V., Kolova, E.E. (2016): Gold and silver minerals in low-sulfidaton ores of the Julietta deposit (northeastern Russia). Russian Geology and Geophysics: 57: 1171-1190; http://forum.amiminerals.it/viewtopic.php?f=5&t=12972 (2016)
USA (TL)
 
  • Idaho
    • Owyhee Co.
      • De Lamar District
Bindi, L., Evain, M., Menchetti, S. (2007): Selenopolybasite, [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2], a new member of the pearceite–polybasite group from the De Lamar mine, Owyhee County, Idaho, USA. Canadian Mineralogist, 45, 1525-1528.
  • Washington
    • Ferry Co.
      • Republic District
        • Republic
          • Klondike Mountain
Bart Cannon microprobe analysis.
Mineral and/or Locality  
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