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Argentotetrahedrite-(Cd)

A valid IMA mineral species
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Formula:
Ag6(Cu4Cd2)Sb4S12S
Colour:
Steel grey tarnished to black
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
5.580 (Calculated)
Crystal System:
Isometric
Name:
For the relationship to other members of the tetrahedrite group.
Unique combination of elements (status: October 2022); however, compare 'Cd-Freibergite'.

The Ag6-analogue of tetraedrite-(Cd).


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Unique IdentifiersHide

Mindat ID:
470390
Long-form identifier:
mindat:1:1:470390:3
GUID
(UUID V4):
2cd7733a-4d61-4c33-a373-105655dcd317

IMA Classification of Argentotetrahedrite-(Cd)Hide

IMA status:
Approved
IMA Formula:
Ag6(Cu4Cd2)Sb4S13
Approval year:
2022
First published:
2023

Classification of Argentotetrahedrite-(Cd)Hide

Strunz-mindat (2023):
2.GB.

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

Physical Properties of Argentotetrahedrite-(Cd)Hide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Steel grey tarnished to black
Streak:
Black
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Fracture:
Conchoidal
Density:
5.580 g/cm3 (Calculated)

Optical Data of Argentotetrahedrite-(Cd)Hide

Reflectivity:
WavelengthR
470nm30.4%
546nm30.3%
589nm30.3%
650nm28.7%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 30.4%.
Colour in reflected light:
Grey with a creamy tint, rapidly (tens of minutes) tarnished to orange-brown.
Internal Reflections:
None.

Chemistry of Argentotetrahedrite-(Cd)Hide

Mindat Formula:
Ag6(Cu4Cd2)Sb4S12S
Elements listed:
Ag, Cd, Cu, S, Sb - search for minerals with similar chemistry

Crystallography of Argentotetrahedrite-(Cd)Hide

Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
I4 3m
Cell Parameters:
a = 10.65(2) Å
Unit Cell V:
1,207.95 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.074 Å(100)
2.846 Å(6)
2.663 Å(26)
2.510 Å(6)
1.944 Å(6)
1.883 Å(48)
1.728 Å(5)
1.606 Å(30)

Type Occurrence of Argentotetrahedrite-(Cd)Hide

Type Locality:
ⓘ Rudno nad Hronom exploration area, Rudno nad Hronom, Žarnovica District, Banská Bystrica Region, Slovakia
General Appearance of Type Material:
Anhedral grains up to 30 μm.
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, 19300 Praha 9, Czech Republic, catalogue number P1P 8/2022.
Geological Setting of Type Material:
Au-Ag epithermal deposit.
Associated Minerals at Type Locality:
Tetrahedrite-(Zn)PyrargyritePolybasiteGreenockiteGalena
Argentotetrahedrite-(Zn)Acanthite

Synonyms of Argentotetrahedrite-(Cd)Hide

Relationship of Argentotetrahedrite-(Cd) to other SpeciesHide

Member of:
Freibergite Subgroup > Tetrahedrite Group
Other Members of this group:
Argentotetrahedrite-(Fe)Ag6(Cu4Fe2)Sb4S12SIso. 4 3m : I4 3m
Argentotetrahedrite-(Hg)Ag6(Cu4Hg2)Sb4S12SIso. 4 3m : I4 3m
Argentotetrahedrite-(Zn)Ag6(Cu4Zn2)Sb4S12SIso. 4 3m : I4 3m
Kenoargentotetrahedrite-(Fe)[Ag6]4+(Cu4Fe2+2)Sb4S12◻Iso. 4 3m : I4 3m
Kenoargentotetrahedrite-(Zn)[Ag6]4+(Cu4Zn2)Sb4S12◻Iso. 4 3m : I4 3m

Related Minerals - Strunz-mindat GroupingHide

2.GB.Polybasite-TacTrig. 3m (3 2/m) : P3m1
2.GB.Argentotetrahedrite-(Hg)Ag6(Cu4Hg2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Hakite-(Zn)Cu6(Cu4Zn2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.Hakite-(Cd)Cu6(Cu4Cd2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.Argentotetrahedrite-(Zn)Ag6(Cu4Zn2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Pošepnýite(Cu+3◻3)(Hg2+4Cu+2)Sb4Se12(Se0.5◻0.5)Iso. 4 3m : I4 3m
2.GB.ArgentopearceiteAg16As2S11Trig. 3 2 : P3 2 1
2.GB.Zvěstovite-(Zn)Ag6(Ag4Zn2)As4S12SIso.
2.GB.Kenoargentotennantite-(Fe)[Ag6]4+(Cu4Fe2)As4S12◻Iso.
2.GB.Tennantite-(Hg)Cu6(Cu4Hg2)As4S12SIso. 4 3m : I4 3m
2.GB.Kenoargentotetrahedrite-(Zn)[Ag6]4+(Cu4Zn2)Sb4S12◻Iso. 4 3m : I4 3m
2.GB.Tennantite-(Cu)Cu6(Cu4Cu2)As4S12SIso. 4 3m : I4 3m
2.GB.Stibiogoldfieldite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(Ni)Cu6(Cu4Ni2)As4S12SIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Ni)Cu6(Cu4Ni2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Stibioústalečite(Cu4Cu2)(Cu4Cu+2)(Sb2Te2)Se12SeIso. 4 3m : I4 3m
2.GB.Arsenogoldfieldite(Cu4Cu2)(Cu4Cu+2)(As2Te2)S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(In)Cu6(Cu4(In3+Cu+))As4S12SIso. 4 3m : I4 3m
2.GB.Tennantite-(Cd)Cu6(Cu4Cd2)As4S12SIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Mn)Cu6(Cu4Mn2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Argentopolybasite[Ag6Sb2S7][Ag9AgS4]Trig. 3 2 : P3 2 1
2.GB.XKenorozhdestvenskayaite-(Fe)[Ag6]4+(Ag4Fe2+2)Sb4S12◻Iso. 4 3m : I4 3m
2.GB.Tennantite-(Mn)Cu6(Cu4Mn2)As4S12SIso. 4 3m : I4 3m
2.GB.Zvěstovite-(Fe)Ag6(Ag4Fe2+2)As4S12SIso. 4 3m : I4 3m
2.GB.Hakite-(Fe)Cu6(Cu4Fe2+2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Cu)Cu6(Cu4Cu2+2)Sb4S12SIso. 4 3m : I4 3m
2.GB.Arsenoústalečite(Cu4Cu2)(Cu4Cu+2)(As2Te2)Se12SeIso. 4 3m : I4 3m
2.GB.Tetrahedrite-(Cd)Cu6(Cu4Cd2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Argentotennantite-(Zn)Ag6(Cu4Zn2)As4S12SIso. 4 3m : I4 3m
2.GB.05Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1Iso. 4 3m : I4 3m
2.GB.05Giraudite-(Zn)Cu6(Cu4Zn2)As4Se12SeIso. 4 3m : I4 3m
2.GB.05Goldfieldite(Cu4◻2)(Cu4Cu+2)Te4S12SIso. 4 3m : I4 3m
2.GB.05Hakite-(Hg)Cu6(Cu4Hg2)Sb4Se12SeIso. 4 3m : I4 3m
2.GB.05Tennantite SubgroupCu6(Cu4C2+2)As4S12SIso. 4 3m : I4 3m
2.GB.05Tetrahedrite SubgroupCu6(Cu4C2+2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Argentotetrahedrite-(Fe)Ag6(Cu4Fe2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Rozhdestvenskayaite-(Zn)Ag6(Ag4Zn2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05UM1992-21-S:AgFeSbAg6(Ag4Fe2+2)Sb4S12SIso.
2.GB.05Tennantite-(Zn)Cu6(Cu4Zn2)As4S12SIso. 4 3m : I4 3m
2.GB.05Tetrahedrite-(Zn)Cu6(Cu4Zn2)Sb4S12SIso. 4 3m : F4 3m
2.GB.05Tennantite-(Fe)Cu6(Cu4Fe2+2)As4S12SIso. 4 3m : I4 3m
2.GB.05Tetrahedrite-(Fe)Cu6(Cu4Fe2+2)Sb4S12SIso. 4 3m : I4 3m
2.GB.05Kenoargentotetrahedrite-(Fe)[Ag6]4+(Cu4Fe2+2)Sb4S12◻Iso. 4 3m : I4 3m
2.GB.05Tetrahedrite-(Hg)Cu6(Cu4Hg2)Sb4S12SIso. 4 3m : I4 3m
2.GB.10SelenostephaniteAg5SbSe4Orth. 2 2 2 : P21 21 21
2.GB.10StephaniteAg5SbS4Orth. mm2 : Cmc21
2.GB.15Pearceite[Ag6As2S7][Ag9CuS4]Trig. 3m (3 2/m) : P3m1
2.GB.15Polybasite[Ag6Sb2S7][Ag9CuS4]Mon. 2/m : B2/m
2.GB.15UM2003-14-S:AgBiFeTeAg16FeBiTe3S8
2.GB.15Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]Trig. 3m (3 2/m) : P3m1
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(Hg5Cu)CsAs4S12Iso. 4 3m : I4 3m
2.GB.20Vorontsovite(Hg5Cu)Σ6TlAs4S12Iso. 4 3m : I4 3m
2.GB.20Ferrovorontsovite(Fe5Cu)Σ6TlAs4S12Iso. 4 3m : I4 3m

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 Argentotetrahedrite-(Cd)Hide

References for Argentotetrahedrite-(Cd)Hide

Reference List:
Mikuš, T., Majzlan, J., Sejkora. J., Vlasáč, J., Steciuk, G., Plášil, J., Rößler, C., and Matthes, C. (2022) Argentotetrahedrite-(Cd), IMA 2022- 053, in: CNMNC Newsletter 69. European Journal of Mineralogy, 34. https://doi.org/10.5194/ejm-34-463-2022
Mikuš, Tomáš, Vlasáč, Jozef, Majzlan, Juraj, Sejkora, Jiří, Steciuk, Gwladys, Plášil, Jakub, Rößler, Christiane, Matthes, Christian (2023) Argentotetrahedrite-(Cd), Ag6(Cu4Cd2)Sb4S13, a new member of the tetrahedrite group from Rudno nad Hronom, Slovakia. Mineralogical Magazine, 87 (2) 262-270 doi:10.1180/mgm.2022.138

Localities for Argentotetrahedrite-(Cd)Hide

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 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.
Slovakia (TL)
 
  • Banská Bystrica Region
    • Žarnovica District
      • Rudno nad Hronom
Mikuš, T., Majzlan, J., Sejkora. J., Vlasáč, J., Steciuk, G., Plášil, J., Rößler, C., and Matthes, C. (2022) Argentotetrahedrite-(Cd), IMA 2022- 053, in: CNMNC Newsletter 69. European Journal of Mineralogy, 34. https://doi.org/10.5194/ejm-34-463-2022
Mikuš, Tomáš, Vlasáč, Jozef, Majzlan, Juraj, Sejkora, Jiří, Steciuk, Gwladys, Plášil, Jakub, Rößler, Christiane, Matthes, Christian (2023) Argentotetrahedrite-(Cd), Ag6(Cu4Cd2)Sb4S13, a new member of the tetrahedrite group from Rudno nad Hronom, Slovakia. Mineralogical Magazine, 87 (2) 262-270 doi:10.1180/mgm.2022.138
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