Tetrahedrite-(Cd)
A valid IMA mineral species
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About Tetrahedrite-(Cd)
Formula:
Cu6(Cu4Cd2)Sb4S12S
Colour:
Black
Lustre:
Metallic
Hardness:
4
Specific Gravity:
5.094 (Calculated)
Crystal System:
Isometric
Member of:
Name:
its name, in keeping with the current nomenclature of tetrahedrite group
Unique Identifiers
Mindat ID:
470685
Long-form identifier:
mindat:1:1:470685:0
GUID
(UUID V4):
(UUID V4):
3221503f-82d1-4cc3-bbd6-f8d41f2ecd65
IMA Classification of Tetrahedrite-(Cd)
Approved
IMA Formula:
Cu6(Cu4Cd2)Sb4S13
Approval year:
2023
Approval history:
IMA No. 2022-115
Classification of Tetrahedrite-(Cd)
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
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
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Ttr-Cd | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Tetrahedrite-(Cd)
Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Black
Hardness:
4 on Mohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Fracture:
Conchoidal
Density:
5.094 g/cm3 (Calculated)
Optical Data of Tetrahedrite-(Cd)
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
470nm | 30.8% | 30.3% |
546nm | 31.1% | 31.2% |
589nm | 31.1% | 31.6% |
650nm | 28.8% | 29.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 31.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
grey with greenish tints or greenish–brownish tints
Internal Reflections:
none
Chemistry of Tetrahedrite-(Cd)
Mindat Formula:
Cu6(Cu4Cd2)Sb4S12S
Elements listed:
Crystallography of Tetrahedrite-(Cd)
Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
I4 3m
Cell Parameters:
a = 10.504(3) Å
Unit Cell V:
1,158.95 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.714 Å | (7) |
3.032 Å | (100) |
2.807 Å | (6) |
2.626 Å | (24) |
2.476 Å | (5) |
1.918 Å | (7) |
1.857 Å | (40) |
1.584 Å | (21) |
Type Occurrence of Tetrahedrite-(Cd)
General Appearance of Type Material:
occurs as anhedral grains, up to 200 µm in size
Place of Conservation of Type Material:
collections of the Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue number P1P 43/2022, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20025
Geological Setting of Type Material:
smaller base-metal and uranium deposits in the outer part of the Příbram ore area is related to a low-T hydrothermal event.
Associated Minerals at Type Locality:
Synonyms of Tetrahedrite-(Cd)
Other Language Names for Tetrahedrite-(Cd)
German:Tetraedrit-(Cd)
Relationship of Tetrahedrite-(Cd) to other Species
Member of:
Other Members of this group:
Tetrahedrite-(Cu) | Cu6(Cu4Cu2+2)Sb4S12S | Iso. 4 3m : I4 3m |
Tetrahedrite-(Fe) | Cu6(Cu4Fe2+2)Sb4S12S | Iso. 4 3m : I4 3m |
Tetrahedrite-(Hg) | Cu6(Cu4Hg2)Sb4S12S | Iso. 4 3m : I4 3m |
Tetrahedrite-(Mn) | Cu6(Cu4Mn2)Sb4S12S | Iso. 4 3m : I4 3m |
Tetrahedrite-(Ni) | Cu6(Cu4Ni2)Sb4S12S | Iso. 4 3m : I4 3m |
Tetrahedrite-(Zn) | Cu6(Cu4Zn2)Sb4S12S | Iso. 4 3m : F4 3m |
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Tetrahedrite-(Cd) associated with Tetrahedrite-(Fe) | Cu6(Cu4Fe2+2)Sb4S12S |
Related Minerals - Strunz-mindat Grouping
2.GB. | Polybasite-Tac | |
2.GB. | Argentotetrahedrite-(Hg) | Ag6(Cu4Hg2)Sb4S12S |
2.GB. | Hakite-(Zn) | Cu6(Cu4Zn2)Sb4Se12Se |
2.GB. | Hakite-(Cd) | Cu6(Cu4Cd2)Sb4Se12Se |
2.GB. | Argentotetrahedrite-(Zn) | Ag6(Cu4Zn2)Sb4S12S |
2.GB. | Pošepnýite | (Cu+3◻3)(Hg2+4Cu+2)Sb4Se12(Se0.5◻0.5) |
2.GB. | Argentopearceite | Ag16As2S11 |
2.GB. | Zvěstovite-(Zn) | Ag6(Ag4Zn2)As4S12S |
2.GB. | Kenoargentotennantite-(Fe) | [Ag6]4+(Cu4Fe2)As4S12◻ |
2.GB. | Tennantite-(Hg) | Cu6(Cu4Hg2)As4S12S |
2.GB. | Kenoargentotetrahedrite-(Zn) | [Ag6]4+(Cu4Zn2)Sb4S12◻ |
2.GB. | Tennantite-(Cu) | Cu6(Cu4Cu2)As4S12S |
2.GB. | Stibiogoldfieldite | (Cu4Cu2)(Cu4Cu+2)(Sb2Te2)S12S |
2.GB. | Tennantite-(Ni) | Cu6(Cu4Ni2)As4S12S |
2.GB. | Tetrahedrite-(Ni) | Cu6(Cu4Ni2)Sb4S12S |
2.GB. | Stibioústalečite | (Cu4Cu2)(Cu4Cu+2)(Sb2Te2)Se12Se |
2.GB. | Arsenogoldfieldite | (Cu4Cu2)(Cu4Cu+2)(As2Te2)S12S |
2.GB. | Tennantite-(In) | Cu6(Cu4(In3+Cu+))As4S12S |
2.GB. | Tennantite-(Cd) | Cu6(Cu4Cd2)As4S12S |
2.GB. | Tetrahedrite-(Mn) | Cu6(Cu4Mn2)Sb4S12S |
2.GB. | Argentopolybasite | [Ag6Sb2S7][Ag9AgS4] |
2.GB.X | Kenorozhdestvenskayaite-(Fe) | [Ag6]4+(Ag4Fe2+2)Sb4S12◻ |
2.GB. | Argentotetrahedrite-(Cd) | Ag6(Cu4Cd2)Sb4S12S |
2.GB. | Tennantite-(Mn) | Cu6(Cu4Mn2)As4S12S |
2.GB. | Zvěstovite-(Fe) | Ag6(Ag4Fe2+2)As4S12S |
2.GB. | Hakite-(Fe) | Cu6(Cu4Fe2+2)Sb4Se12Se |
2.GB. | Tetrahedrite-(Cu) | Cu6(Cu4Cu2+2)Sb4S12S |
2.GB. | Arsenoústalečite | (Cu4Cu2)(Cu4Cu+2)(As2Te2)Se12Se |
2.GB.05 | Argentotennantite-(Zn) | Ag6(Cu4Zn2)As4S12S |
2.GB.05 | Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1 |
2.GB.05 | Giraudite-(Zn) | Cu6(Cu4Zn2)As4Se12Se |
2.GB.05 | Goldfieldite | (Cu4◻2)(Cu4Cu+2)Te4S12S |
2.GB.05 | Hakite-(Hg) | Cu6(Cu4Hg2)Sb4Se12Se |
2.GB.05 | Tennantite Subgroup | Cu6(Cu4C2+2)As4S12S |
2.GB.05 | Tetrahedrite Subgroup | Cu6(Cu4C2+2)Sb4S12S |
2.GB.05 | Argentotetrahedrite-(Fe) | Ag6(Cu4Fe2)Sb4S12S |
2.GB.05 | Rozhdestvenskayaite-(Zn) | Ag6(Ag4Zn2)Sb4S12S |
2.GB.05 | UM1992-21-S:AgFeSb | Ag6(Ag4Fe2+2)Sb4S12S |
2.GB.05 | Tennantite-(Zn) | Cu6(Cu4Zn2)As4S12S |
2.GB.05 | Tetrahedrite-(Zn) | Cu6(Cu4Zn2)Sb4S12S |
2.GB.05 | Tennantite-(Fe) | Cu6(Cu4Fe2+2)As4S12S |
2.GB.05 | Tetrahedrite-(Fe) | Cu6(Cu4Fe2+2)Sb4S12S |
2.GB.05 | Kenoargentotetrahedrite-(Fe) | [Ag6]4+(Cu4Fe2+2)Sb4S12◻ |
2.GB.05 | Tetrahedrite-(Hg) | Cu6(Cu4Hg2)Sb4S12S |
2.GB.10 | Selenostephanite | Ag5SbSe4 |
2.GB.10 | Stephanite | Ag5SbS4 |
2.GB.15 | Pearceite | [Ag6As2S7][Ag9CuS4] |
2.GB.15 | Polybasite | [Ag6Sb2S7][Ag9CuS4] |
2.GB.15 | UM2003-14-S:AgBiFeTe | Ag16FeBiTe3S8 |
2.GB.15 | Selenopolybasite | [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2] |
2.GB.15 | Cupropearceite | [Cu6As2S7][Ag9CuS4] |
2.GB.15 | Cupropolybasite | [Cu6Sb2S7][Ag9CuS4] |
2.GB.15 | UM1979-17-S:BiCuFe | ~Cu18Fe4BiS16 |
2.GB.20 | Galkhaite | (Hg5Cu)CsAs4S12 |
2.GB.20 | Vorontsovite | (Hg5Cu)Σ6TlAs4S12 |
2.GB.20 | Ferrovorontsovite | (Fe5Cu)Σ6TlAs4S12 |
Other Information
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 Tetrahedrite-(Cd)
mindat.org URL:
https://www.mindat.org/min-470685.html
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External Links:
References for Tetrahedrite-(Cd)
Localities for Tetrahedrite-(Cd)
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Czech Republic (TL) | |
| Bosi et al. (2023) +2 other references |
Germany | |
| Bayerl et al. (2022) |
Russia | |
| Sejkora et al. (2023) |
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Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany