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Auropolybasite

A valid IMA mineral species - pending publication
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Discuss Auropolybasite
EditAdd SynonymEdit CIF structuresClear Cache
Formula:
[Ag9AuS4][Ag6Sb2S7]
Colour:
dark grey to black
Lustre:
Metallic
Hardness:
3
Specific Gravity:
6.622 (Calculated)
Crystal System:
Trigonal
Name:
For the gold content and relationship to polybasite
T2ac polytype


Type description reference:

Classification of Auropolybasite

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 Symbols
Transparency:
Opaque
Colour:
Dark grey to black
Streak:
Black
Hardness:
3 onMohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
6.622 g/cm3 (Calculated)

Optical Data of Auropolybasite

Crystallography of Auropolybasite
General Appearance of Type Material:
anhedral grains up to 0.2 mm in size, usually rimmed by acanthite.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue number P1P 17/2024
Geological Setting of Type Material:
form in the waning stages of epithermal systems, from reduced, S-rich and low-salinity fluids that transport Au, Ag, Sb and As in the form of thiocomplexes.
Associated Minerals at Type Locality:
AcanthiteArgentopolybasiteArgentopearceitePyrargyriteProustite
StephaniteSelenostephaniteRozhdestvenskayaite-(Zn)Zvěstovite-(Zn)Zvěstovite-(Fe)
NaumanniteElectrumUytenbogaardtiteIodargyriteBromargyrite
Reference:
Mikuš, Tomáš; Vlasáč, Jozef; Majzlan, Juraj; Plášil, Jakub; Sejkora, Jiří; Števko, Martin; Petříček, Václav; Makovicky, Emil (2025) New minerals auropolybasite, [Ag15AuSb2S11] and auropearceite, [Ag15AuAs2S11], and the implications for the formation of bonanza ores in epithermal systems.American Mineralogist.doi:10.2138/am-2025-9806

Other Language Names for Auropolybasite

Relationship of Auropolybasite to other Species
Other Members of Pearceite-Polybasite Group:
ArgentopearceiteAg16As2S11Trig. 32 :P321
Argentopolybasite[Ag6Sb2S7][Ag9AgS4]Trig. 32 :P321
Argentopolybasite-T2acAg16Sb2S11Trig. 32 :P321
Auropearceite [Ag9AuS4][Ag6As2S7]Trig. 32 :P321
Benleonardite[Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2]Trig.3m(32/m) :P3m1
Cupropearceite[Cu6As2S7][Ag9CuS4]Trig.3m(32/m) :P3m1
Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m :P31m
Fengruiite[Ag6Sb2S7][Ag9CuS2Te2]Trig.3m(32/m) :P3m1
Pearceite[Ag6As2S7][Ag9CuS4]Trig.3m(32/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(32/m) :P3m1

Related Minerals -Strunz-mindat GroupingTrig.3m(32/m) :P3m12.GB.Kenoargentotetrahedrite-(Zn)[Ag6]4+(Cu4Zn2)Sb4S12◻Iso.43m :I43m2.GB.Argentotetrahedrite-(Hg)Ag6(Cu4Hg2)Sb4S12SIso.43m :I43m2.GB.Annivite-(Zn)Cu6(Cu4Zn2)Bi4S12SIso.43m :I43m2.GB.Pošepnýite(Cu+3◻3)(Hg2+4Cu+2)Sb4Se12(Se0.5◻0.5)Iso.43m :I43m2.GB.Tennantite-(Cu)Cu6(Cu4Cu2)As4S12SIso.43m :I43m2.GB.Argentopolybasite[Ag6Sb2S7][Ag9AgS4]Trig. 32 :P3212.GB.Tennantite-(Mn)Cu6(Cu4Mn2)As4S12SIso.43m :I43m2.GB.Argentotetrahedrite-(Cd)Ag6(Cu4Cd2)Sb4S12SIso.43m :I43m2.GB.Stibioústalečite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)Se12SeIso.43m :I43m2.GB.Stibiogoldfieldite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)S12SIso.43m :I43m2.GB.Argentotetrahedrite-(Zn)Ag6(Cu4Zn2)Sb4S12SIso.43m :I43m2.GB.Tetrahedrite-(Cd)Cu6(Cu4Cd2)Sb4S12SIso.43m :I43m2.GB.Arsenogoldfieldite(Cu4Cu2)(Cu4Cu+2)(As2Te2)S12SIso.43m :I43m2.GB.Arsenoústalečite(Cu4Cu2)(Cu4Cu+2)(As2Te2)Se12SeIso.43m :I43m2.GB.Tennantite-(In)Cu6(Cu4(In3+Cu+))As4S12SIso.43m :I43m2.GB.Zvěstovite-(Fe)Ag6(Ag4Fe2+2)As4S12SIso.43m :I43m2.GB.Hakite-(Fe)Cu6(Cu4Fe2+2)Sb4Se12SeIso.43m :I43m2.GB.Tennantite-(Cd)Cu6(Cu4Cd2)As4S12SIso.43m :I43m2.GB.XKenorozhdestvenskayaite-(Fe)[Ag6]4+(Ag4Fe2+2)Sb4S12◻Iso.43m :I43m2.GB.Tetrahedrite-(Cu)Cu6(Cu4Cu2+2)Sb4S12SIso.43m :I43m2.GB.Hakite-(Zn)Cu6(Cu4Zn2)Sb4Se12SeIso.43m :I43m2.GB.Zvěstovite-(Zn)Ag6(Ag4Zn2)As4S12SIso.2.GB.Hakite-(Cd)Cu6(Cu4Cd2)Sb4Se12SeIso.43m :I43m2.GB.Kenoargentotennantite-(Fe)[Ag6]4+(Cu4Fe2)As4S12◻Iso.2.GB.Tennantite-(Hg)Cu6(Cu4Hg2)As4S12SIso.43m :I43m2.GB.Tetrahedrite-(Mn)Cu6(Cu4Mn2)Sb4S12SIso.43m :I43m2.GB.Tennantite-(Ni)Cu6(Cu4Ni2)As4S12SIso.43m :I43m2.GB.Tetrahedrite-(Ni)Cu6(Cu4Ni2)Sb4S12SIso.43m :I43m2.GB.05Hakite-(Hg)Cu6(Cu4Hg2)Sb4Se12SeIso.43m :I43m2.GB.05Rozhdestvenskayaite-(Zn)Ag6(Ag4Zn2)Sb4S12SIso.43m :I43m2.GB.05Argentotennantite-(Zn)Ag6(Cu4Zn2)As4S12SIso.43m :I43m2.GB.05Argentotennantite-(Fe)Ag6(Cu4Fe2)As4S12SIso.43m :I43m2.GB.05Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4C2+2)Sb4S12S0-1Iso.43m :I43m2.GB.05Tennantite SubgroupCu6(Cu4C2+2)As4S12SIso.43m :I43m2.GB.05Tennantite-(Zn)Cu6(Cu4Zn2)As4S12SIso.43m :I43m2.GB.05Tetrahedrite-(Zn)Cu6(Cu4Zn2)Sb4S12SIso.43m :F43m2.GB.05Tetrahedrite SubgroupCu6(Cu4C2+2)Sb4S12SIso.43m :I43m2.GB.05Tennantite-(Fe)Cu6(Cu4Fe2+2)As4S12SIso.43m :I43m2.GB.05Tetrahedrite-(Fe)Cu6(Cu4Fe2+2)Sb4S12SIso.43m :I43m2.GB.05Tetrahedrite-(Hg)Cu6(Cu4Hg2)Sb4S12SIso.43m :I43m2.GB.05Kenoargentotetrahedrite-(Fe)[Ag6]4+(Cu4Fe2+2)Sb4S12◻Iso.43m :I43m2.GB.05Giraudite-(Zn)Cu6(Cu4Zn2)As4Se12SeIso.43m :I43m2.GB.05Argentotetrahedrite-(Fe)Ag6(Cu4Fe2)Sb4S12SIso.43m :I43m2.GB.05Goldfieldite(Cu4◻2)(Cu4Cu+2)Te4S12SIso.43m :I43m2.GB.05UM1992-21-S:AgFeSbAg6(Ag4Fe2+2)Sb4S12SIso.2.GB.10SelenostephaniteAg5SbSe4Orth. 222 :P2121212.GB.10StephaniteAg5SbS4Orth.mm2 :Cmc212.GB.15UM2003-14-S:AgBiFeTeAg16FeBiTe3S82.GB.15UM1979-17-S:BiCuFe~Cu18Fe4BiS162.GB.15Pearceite[Ag6As2S7][Ag9CuS4]Trig.3m(32/m) :P3m12.GB.15ArgentopearceiteAg16As2S11Trig. 32 :P3212.GB.15Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m :P31m2.GB.15Fengruiite[Ag6Sb2S7][Ag9CuS2Te2]Trig.3m(32/m) :P3m12.GB.15Auropearceite [Ag9AuS4][Ag6As2S7]Trig. 32 :P3212.GB.15Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]Trig.3m(32/m) :P3m12.GB.15Polybasite[Ag6Sb2S7][Ag9CuS4]Mon. 2/m :B2/m2.GB.15Cupropearceite[Cu6As2S7][Ag9CuS4]Trig.3m(32/m) :P3m12.GB.20Vorontsovite(Hg5Cu)Σ6TlAs4S12Iso.43m :I43m2.GB.20Ferrovorontsovite(Fe5Cu)Σ6TlAs4S12Iso.43m :I43m2.GB.20Galkhaite(Hg5Cu)CsAs4S12Iso.43m :I43m

Fluorescence of Auropolybasite

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    • References for AuropolybasiteⓘNová Baňa depositVlasáč et al. (2025)Mikuš+2 other references
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