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Argentotennantite-(Fe)

A valid IMA mineral species
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00151300017272473255584.jpg
Argentotennantite-(Fe), etc.

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
00151300017272473255584.jpg
Argentotennantite-(Fe), etc.

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
00151300017272473255584.jpg
Argentotennantite-(Fe), etc.

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
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About Argentotennantite-(Fe)Hide

Formula:
Ag6(Cu4Fe2)As4S12S
Colour:
gray
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.922 (Calculated)
Crystal System:
Isometric
Name:
For the iron member of Argentotennantite
Fe-analogue of argentotennantite-(Zn).
As-analogue of argentotetrahedrite-(Fe).
Closely related to kenoargentotennantite-(Fe).


Note: The most Ag-rich grain reported by Kolitsch et al. (2019) (as "argentotennantite" because the IMA list of minerals at that time had a Fe-dominant formula) has the composition (Ag3.36Cu2.64)[Cu4(Fe1.61Zn0.39)](As,Sb)4S13.


Unique IdentifiersHide

Mindat ID:
471105
Long-form identifier:
mindat:1:1:471105:2

Similar NamesHide

Argentotennantite-(Zn)A valid IMA mineral speciesAg6(Cu4Zn2)As4S12S

IMA Classification of Argentotennantite-(Fe)Hide

Classification of Argentotennantite-(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
Atnt-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 Argentotennantite-(Fe)Hide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Gray
Streak:
Black
Hardness:
4 on Mohs scale
Comment:
by analogy with tennantite
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Fracture:
Conchoidal
Density:
4.922 g/cm3 (Calculated)

Optical Data of Argentotennantite-(Fe)Hide

Reflectivity:
WavelengthR1 (%)
470nm29.9%
546nm30.1%
589nm29.8%
650nm28.9%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 30.1%.
Colour in reflected light:
pale gray with brownish shade
Internal Reflections:
none

Chemistry of Argentotennantite-(Fe)Hide

Mindat Formula:
Ag6(Cu4Fe2)As4S12S
Element Weights:
Element% weight
Ag37.419 %
S24.101 %
As17.327 %
Cu14.696 %
Fe6.458 %

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

Crystallography of Argentotennantite-(Fe)Hide

Crystal System:
Isometric
Class (H-M):
43m - Hextetrahedral
Space Group:
I43m
Cell Parameters:
a = 10.4365(5) Å
Unit Cell V:
1,136.75 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.380 Å(9)
3.013 Å(100)
2.789 Å(5)
2.609 Å(20)
2.460 Å(5)
2.047 Å(5)
1.845 Å(39)
1.573 Å(21)
Locality:
San Genaro Mine, Santa Ana District, Castrovirreyna Province, Huancavelica, Peru
Reference:
Sejkora, Jiří; Velebil, Dalibor; Biagioni, Cristian; Dolníček, Zdeněk; Hyršl, Jaroslav (2026) Argentotennantite-(Fe), Ag 6 (Cu 4 Fe 2 )As 4 S 13 , a new member of the tetrahedrite group from the San Genaro mine, Peru: occurrence and crystal structure. European Journal of Mineralogy, 38 (3). p.325-336. doi:10.5194/ejm-38-325-2026
Comments:
Powder X-ray diffraction data could not be collected due to the paucity of available material. Consequently, powder X-ray diffraction data, given in Table 7, were calculated through the software PowderCell 2.3 (Kraus and Nolze, 1996) using the structural model of argentotennantite-(Fe) discussed below.

Type Occurrence of Argentotennantite-(Fe)Hide

Type Locality:
ⓘ San Genaro Mine, Santa Ana District, Castrovirreyna Province, Huancavelica, Peru
General Appearance of Type Material:
anhedral grains up to 100 µm in size. More commonly, it forms micrometer-sized rims around crystals of argentotetrahedrite-(Zn) or replaces the latter around cavities and fissures, along with Ag-rich tennantite-(Fe).
Place of Conservation of Type Material:
Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 193 00 Praha 9, Czech Republic, catalogue number P1P 52/2023, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20070
Geological Setting of Type Material:
hydrothermal veins rich in silver sulfosalts (with lengths of up to 2.5 km and thicknesses of about 1 m)
Associated Minerals at Type Locality:
QuartzArgentotetrahedrite-(Zn)PyrargyriteBaryteSiderite
Reference:
Sejkora, Jiří; Velebil, Dalibor; Biagioni, Cristian; Dolníček, Zdeněk; Hyršl, Jaroslav (2026) Argentotennantite-(Fe), Ag 6 (Cu 4 Fe 2 )As 4 S 13 , a new member of the tetrahedrite group from the San Genaro mine, Peru: occurrence and crystal structure. European Journal of Mineralogy, 38 (3). p.325-336. doi:10.5194/ejm-38-325-2026

Synonyms of Argentotennantite-(Fe)Hide

Other Language Names for Argentotennantite-(Fe)Hide

Relationship of Argentotennantite-(Fe) to other SpeciesHide

Member of:
Arsenofreibergite Subgroup > Tetrahedrite Group
Other Members of Arsenofreibergite Subgroup:
Argentotennantite-(Zn)Ag6(Cu4Zn2)As4S12SIso. 43m : I43m
Kenoargentotennantite-(Fe)[Ag6]4+(Cu4Fe2)As4S12◻Iso. 43m : I43m

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Argentotennantite-(Fe) associated with Tennantite SubgroupCu6(Cu4C2+2)As4S12S
1 photo of Argentotennantite-(Fe) associated with GalenaPbS
1 photo of Argentotennantite-(Fe) associated with QuartzSiO2
1 photo of Argentotennantite-(Fe) associated with FluoriteCaF2

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.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.05Kenoargentotetrahedrite-(Fe)[Ag6]4+(Cu4Fe2+2)Sb4S12◻Iso. 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 Argentotennantite-(Fe)Hide

References for Argentotennantite-(Fe)Hide

Localities for Argentotennantite-(Fe)Hide

Showing 4 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.
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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
 
  • Vorarlberg
    • Bludenz District
      • Silbertal
        • Kristbergsattel
Uwe Kolitsch (SEM-EDS analyses, to be published) +1 other reference
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Kolitsch et al. (2019)
Peru (TL)
 
  • Huancavelica
    • Castrovirreyna Province
      • Santa Ana District
Sejkora et al. (2024) +1 other reference
Slovakia
 
  • Banská Bystrica Region
    • Žiar nad Hronom District
      • Kremnica
Sejkora et al. (2026)
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