Vote for your favorite mineral in #MinCup26! - Azurite vs. Smithsonite
It's carbonate-vs-carbonate to kick off Mineral Cup 2026 with copper-rich Azurite against zinc-rich Smithsonite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Kenoargentotetrahedrite-(Fe)

A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
06900350017486532755550.jpg
Kenoargentotetrahedrite-(Fe)

Khachakchan Ag-Sb-Hg deposit, Khachakchan ore cluster, Verkhoyansk Silver Province, Verkhoyansk Fold Belt, Sakha, Russia
07386050017272473226491.jpg
Kenoargentotetrahedrite-(Fe), etc.

Barbara adit, Meiselding, Mölbling, Sankt Veit an der Glan District, Carinthia, Austria
03811500017755275567045.jpg
Kenoargentotetrahedrite-(Fe), etc.

Khachakchan Ag-Sb-Hg deposit, Khachakchan ore cluster, Verkhoyansk Silver Province, Verkhoyansk Fold Belt, Sakha, Russia
06900350017486532755550.jpg
Kenoargentotetrahedrite-(Fe)

Khachakchan Ag-Sb-Hg deposit, Khachakchan ore cluster, Verkhoyansk Silver Province, Verkhoyansk Fold Belt, Sakha, Russia
00973190017363572581156.jpg
Kenoargentotetrahedrite-(Fe), etc.

Barbara adit, Meiselding, Mölbling, Sankt Veit an der Glan District, Carinthia, Austria
03546600017720888712439.jpg
Kenoargentotetrahedrite-(Fe), etc.

Khachakchan Ag-Sb-Hg deposit, Khachakchan ore cluster, Verkhoyansk Silver Province, Verkhoyansk Fold Belt, Sakha, Russia
06900350017486532755550.jpg
Kenoargentotetrahedrite-(Fe)

Khachakchan Ag-Sb-Hg deposit, Khachakchan ore cluster, Verkhoyansk Silver Province, Verkhoyansk Fold Belt, Sakha, Russia
07386050017272473226491.jpg
Kenoargentotetrahedrite-(Fe), etc.

Barbara adit, Meiselding, Mölbling, Sankt Veit an der Glan District, Carinthia, Austria
Hide all sections | Show all sections

About Kenoargentotetrahedrite-(Fe)Hide

Formula:
[Ag6]4+(Cu4Fe2+2)Sb4S12◻
Ag in the M2 site consists of a [Ag6]4+ cluster that presumably exhibits metal-metal bonding; the "missing" M2 charge is compensated by a vacancy in the S2 site; thus, there are only 12 S atoms per formula unit, not 13.
Colour:
greenish grey
Lustre:
Metallic
Crystal System:
Isometric
Name:
The name kenoargentotetrahedrite-(Fe) partially supplants the former name freibergite for Fe>Zn members. The new name follows the revised nomenclature for the tetrahedrite group (Biagioni et al 2020).
Sb analogue of Kenoargentotennantite-(Fe).

The name kenoargentotetrahedrite-(Fe) partially supplants the former name "freibergite" for Fe>Zn members.


Unique IdentifiersHide

Mindat ID:
53610
Long-form identifier:
mindat:1:1:53610:3

Similar NamesHide

Kenoargentotetrahedrite-(Zn)A valid IMA mineral species[Ag6]4+(Cu4Zn2)Sb4S12◻

IMA Classification of Kenoargentotetrahedrite-(Fe)Hide

Classification of Kenoargentotetrahedrite-(Fe)Hide

Strunz-mindat (2026):
2.GB.05

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

Physical Properties of Kenoargentotetrahedrite-(Fe)Hide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Greenish grey

Chemistry of Kenoargentotetrahedrite-(Fe)Hide

Mindat Formula:
[Ag6]4+(Cu4Fe2+2)Sb4S12◻

Ag in the M2 site consists of a [Ag6]4+ cluster that presumably exhibits metal-metal bonding; the "missing" M2 charge is compensated by a vacancy in the S2 site; thus, there are only 12 S atoms per formula unit, not 13.
Element Weights:
Element% weight
Ag34.337 %
Sb25.839 %
S20.414 %
Cu13.485 %
Fe5.926 %

Calculated from ideal end-member formula.
Elements listed:
Ag, Cu, Fe, S, Sb - search for minerals with similar chemistry

Crystallography of Kenoargentotetrahedrite-(Fe)Hide

Crystal System:
Isometric
Class (H-M):
43m - Hextetrahedral
Space Group:
I43m
Cell Parameters:
a = 10.4930(4) Å
Unit Cell V:
1155.31 ų
Z:
2
Comment:
Space group by analogy with other members of Tetrahedrite group. Cell parameters from 'freibergite' of Welch et al 2018.

Geological EnvironmentHide

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

Type Occurrence of Kenoargentotetrahedrite-(Fe)Hide

Other Language Names for Kenoargentotetrahedrite-(Fe)Hide

Relationship of Kenoargentotetrahedrite-(Fe) to other SpeciesHide

Member of:
Freibergite Subgroup > Tetrahedrite Group
Other Members of Freibergite Subgroup:
Argentotetrahedrite-(Cd)Ag6(Cu4Cd2)Sb4S12SIso. 43m : I43m
Argentotetrahedrite-(Fe)Ag6(Cu4Fe2)Sb4S12SIso. 43m : I43m
Argentotetrahedrite-(Hg)Ag6(Cu4Hg2)Sb4S12SIso. 43m : I43m
Argentotetrahedrite-(Zn)Ag6(Cu4Zn2)Sb4S12SIso. 43m : I43m
Kenoargentotetrahedrite-(Zn)[Ag6]4+(Cu4Zn2)Sb4S12◻Iso. 43m : I43m

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Kenoargentotetrahedrite-(Fe) associated with GalenaPbS
1 photo of Kenoargentotetrahedrite-(Fe) associated with QuartzSiO2
1 photo of Kenoargentotetrahedrite-(Fe) associated with EugeniteAg11Hg2
1 photo of Kenoargentotetrahedrite-(Fe) associated with Argentopolybasite[Ag6Sb2S7][Ag9AgS4]

Related Minerals - Strunz-mindat GroupingHide

2.GB.'Polybasite-Tac'[Ag6Sb2S7][Ag9CuS4]Trig. 3m(32/m) : P3m1
2.GB.Kenoargentotetrahedrite-(Zn)[Ag6]4+(Cu4Zn2)Sb4S12◻Iso. 43m : I43m
2.GB.Argentotetrahedrite-(Hg)Ag6(Cu4Hg2)Sb4S12SIso. 43m : I43m
2.GB.Annivite-(Zn)Cu6(Cu4Zn2)Bi4S12SIso. 43m : I43m
2.GB.Pošepnýite(Cu+3◻3)(Hg2+4Cu+2)Sb4Se12(Se0.5◻0.5)Iso. 43m : I43m
2.GB.Tennantite-(Cu)Cu6(Cu4Cu2)As4S12SIso. 43m : I43m
2.GB.Argentopolybasite[Ag6Sb2S7][Ag9AgS4]Trig. 32 : P321
2.GB.Tennantite-(Mn)Cu6(Cu4Mn2)As4S12SIso. 43m : I43m
2.GB.Argentotetrahedrite-(Cd)Ag6(Cu4Cd2)Sb4S12SIso. 43m : I43m
2.GB.Stibioústalečite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)Se12SeIso. 43m : I43m
2.GB.Stibiogoldfieldite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)S12SIso. 43m : I43m
2.GB.Argentotetrahedrite-(Zn)Ag6(Cu4Zn2)Sb4S12SIso. 43m : I43m
2.GB.Tetrahedrite-(Cd)Cu6(Cu4Cd2)Sb4S12SIso. 43m : I43m
2.GB.Arsenogoldfieldite(Cu4Cu2)(Cu4Cu+2)(As2Te2)S12SIso. 43m : I43m
2.GB.Arsenoústalečite(Cu4Cu2)(Cu4Cu+2)(As2Te2)Se12SeIso. 43m : I43m
2.GB.Tennantite-(In)Cu6(Cu5In)As4S13Iso. 43m : I43m
2.GB.Zvěstovite-(Fe)Ag6(Ag4Fe2+2)As4S12SIso. 43m : I43m
2.GB.Hakite-(Fe)Cu6(Cu4Fe2+2)Sb4Se12SeIso. 43m : I43m
2.GB.Tennantite-(Cd)Cu6(Cu4Cd2)As4S12SIso. 43m : I43m
2.GB.XKenorozhdestvenskayaite-(Fe)[Ag6]4+(Ag4Fe2+2)Sb4S12◻Iso. 43m : I43m
2.GB.Tetrahedrite-(Cu)Cu6(Cu4Cu2+2)Sb4S12SIso. 43m : I43m
2.GB.Hakite-(Zn)Cu6(Cu4Zn2)Sb4Se12SeIso. 43m : I43m
2.GB.Zvěstovite-(Zn)Ag6(Ag4Zn2)As4S12SIso.
2.GB.Hakite-(Cd)Cu6(Cu4Cd2)Sb4Se12SeIso. 43m : I43m
2.GB.Kenoargentotennantite-(Fe)[Ag6]4+(Cu4Fe2)As4S12◻Iso. 43m : I43m
2.GB.Tennantite-(Hg)Cu6(Cu4Hg2)As4S12SIso. 43m : I43m
2.GB.Tetrahedrite-(Mn)Cu6(Cu4Mn2)Sb4S12SIso. 43m : I43m
2.GB.Tennantite-(Ni)Cu6(Cu4Ni2)As4S12SIso. 43m : I43m
2.GB.Tetrahedrite-(Ni)Cu6(Cu4Ni2)Sb4S12SIso. 43m : I43m
2.GB.05Hakite-(Hg)Cu6(Cu4Hg2)Sb4Se12SeIso. 43m : I43m
2.GB.05Rozhdestvenskayaite-(Zn)Ag6(Ag4Zn2)Sb4S12SIso. 43m : I43m
2.GB.05Argentotennantite-(Zn)Ag6(Cu4Zn2)As4S12SIso. 43m : I43m
2.GB.05Argentotennantite-(Fe)Ag6(Cu4Fe2)As4S12SIso. 43m : I43m
2.GB.05Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1Iso. 43m : I43m
2.GB.05Tennantite SubgroupCu6(Cu4C2+2)As4S12SIso. 43m : I43m
2.GB.05Tennantite-(Zn)Cu6(Cu4Zn2)As4S12SIso. 43m : I43m
2.GB.05Tetrahedrite-(Zn)Cu6(Cu4Zn2)Sb4S12SIso. 43m : F43m
2.GB.05Tetrahedrite SubgroupCu6(Cu4C2+2)Sb4S12SIso. 43m : I43m
2.GB.05Tennantite-(Fe)Cu6(Cu4Fe2+2)As4S12SIso. 43m : I43m
2.GB.05Tetrahedrite-(Fe)Cu6(Cu4Fe2+2)Sb4S12SIso. 43m : I43m
2.GB.05Tetrahedrite-(Hg)Cu6(Cu4Hg2)Sb4S12SIso. 43m : I43m
2.GB.05Giraudite-(Zn)Cu6(Cu4Zn2)As4Se12SeIso. 43m : I43m
2.GB.05Argentotetrahedrite-(Fe)Ag6(Cu4Fe2)Sb4S12SIso. 43m : I43m
2.GB.05Goldfieldite(Cu4◻2)(Cu4Cu+2)Te4S12SIso. 43m : I43m
2.GB.05'UM1992-21-S:AgFeSb'Ag6(Ag4Fe2+2)Sb4S12SIso.
2.GB.10SelenostephaniteAg5SbSe4Orth. 222 : P212121
2.GB.10StephaniteAg5SbS4Orth. mm2 : Cmc21
2.GB.15'UM2003-14-S:AgBiFeTe'Ag16FeBiTe3S8
2.GB.15'UM1979-17-S:BiCuFe'~Cu18Fe4BiS16
2.GB.15Pearceite[Ag6As2S7][Ag9CuS4]Trig. 3m(32/m) : P3m1
2.GB.15ArgentopearceiteAg16As2S11Trig. 32 : P321
2.GB.15Cupropolybasite[Cu6Sb2S7][Ag9CuS4]Trig. 3m : P31m
2.GB.15Fengruiite[Ag6Sb2S7][Ag9CuS2Te2]Trig. 3m(32/m) : P3m1
2.GB.15Auropearceite [Ag9AuS4][Ag6As2S7]Trig. 32 : P321
2.GB.15Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]Trig. 3m(32/m) : P3m1
2.GB.15Polybasite[Ag6Sb2S7][Ag9CuS4]Mon. 2/m : B2/m
2.GB.15Auropolybasite[Ag9AuS4][Ag6Sb2S7]Trig. 32 : P321
2.GB.15Cupropearceite[Cu6As2S7][Ag9CuS4]Trig. 3m(32/m) : P3m1
2.GB.20Vorontsovite(Hg5Cu)Σ6TlAs4S12Iso. 43m : I43m
2.GB.20Ferrovorontsovite(Fe5Cu)Σ6TlAs4S12Iso. 43m : I43m
2.GB.20Galkhaite(Hg5Cu)CsAs4S12Iso. 43m : I43m

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 Kenoargentotetrahedrite-(Fe)Hide

References for Kenoargentotetrahedrite-(Fe)Hide

Localities for Kenoargentotetrahedrite-(Fe)Hide

Showing 15 localities.

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.
Hide all sections | Show all sections

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.
Austria
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Mölbling
        • Meiselding
Auer et al. (2022)
Bolivia
 
  • Potosí
    • Sud Chichas Province
      • Atocha Municipality
Velebil et al. (2023)
    • Tomás Frías Province
      • Potosí (Potosí Municipality)
Velebil et al. (2023)
Canada
 
  • Yukon
    • Mayo mining district
      • Keno Hill
rruff.info (n.d.)
China
 
  • Henan
    • Nanyang
      • Tongbai County
        • Weishancheng ore field
Qu et al. (2024)
  • Liaoning
    • Huludao
      • Jianchang County
Shu et al. (2022)
Czech Republic
 
  • Central Bohemian Region
    • Benešov District
      • Zvěstov
Sejkora et al. (2022)
    • Kutná Hora District
      • Kutná Hora
Pažout (2025)
Pažout et al. (2026)
    • Příbram District
      • Háje
        • Háje deposit
Dolníček et al. (2023)
  • Vysočina Region
    • Havlíčkův Brod District
      • Přibyslav
Pauliš et al. (2023)
Germany (TL)
 
  • Saxony
    • Mittelsachsen
      • Brand-Erbisdorf
Biagioni et al. (2020)
      • Freiberg
        • Zug
          • Beschert Glück Mine
Biagioni et al. (2020)
Slovakia
 
  • Košice Region
    • Gelnica District
      • Smolník
Radvanec M. et al. (2022)
Quick NavTopAbout Kenoargentotetrahedrite-(Fe)Unique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography Geological EnvironmentType Occurrence Other LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 1, 2026 11:14:03 Page updated: August 20, 2026 22:24:07
Go to top of page