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Giraudite Subgroup
A group of related mineral species
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About Giraudite Subgroup
Formula:
Cu6(Cu4 C2+2)As4Se12Se
In the A-site, group end-members contain six III(Cu+Ag) cations, where Cu>Ag.
C2+ = Fe2+, Zn, Cd, Hg and/or other species
C2+ = Fe2+, Zn, Cd, Hg and/or other species
Member of:
Biagioni et al. (2020) delineate the series of Ag-poor giraudite, where Ag < 3 apfu, belong to the hakite series.
Although considered a series, there is presently only one IMA-recognized end-member giraudite. However, the existence of suspected additional members has been reported although these compositions have not been IMA approved. Hence, to accommodate these likely future recognitions, the "giraudite series" is here treated as the "Giraudite Subgroup" of the Tetrahedrite Group.
Although considered a series, there is presently only one IMA-recognized end-member giraudite. However, the existence of suspected additional members has been reported although these compositions have not been IMA approved. Hence, to accommodate these likely future recognitions, the "giraudite series" is here treated as the "Giraudite Subgroup" of the Tetrahedrite Group.
Unique Identifiers
Mindat ID:
54911
Long-form identifier:
mindat:1:1:54911:6
IMA Classification of Giraudite Subgroup
IMA status notes:
IMA Approved Group Name
Chemistry of Giraudite Subgroup
Mindat Formula:
Cu6(Cu4 C2+2)As4Se12Se
In the A-site, group end-members contain six III(Cu+Ag) cations, where Cu>Ag.
C2+ = Fe2+, Zn, Cd, Hg and/or other species
In the A-site, group end-members contain six III(Cu+Ag) cations, where Cu>Ag.
C2+ = Fe2+, Zn, Cd, Hg and/or other species
Synonyms of Giraudite Subgroup
Relationship of Giraudite Subgroup to other Species
Member of:
Other Members of Tetrahedrite Group:
| Annivite Subgroup | Cu6(Cu4 C2+2)Bi4S12S | |
| Arsenofreibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C2+2)As4S12S0-1 | |
| Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1 | Iso. 43m : I43m |
| Goldfieldite Subgroup | (Cu4(◻,Cu)2(Cu4Cu+2)((Te,Sb,As)2Te2)S12S | |
| Hakite Subgroup | Cu6(Cu4 C2+2)Sb4Se12Se | |
| Pošepnýite | (Cu+3◻3)(Hg2+4Cu+2)Sb4Se12(Se0.5◻0.5) | Iso. 43m : I43m |
| Rozhdestvenskayaite Subgroup | (Ag6,[Ag6]4+)(Ag4 C2+2)Sb4S12S0-1 | |
| Tennantite Subgroup | Cu6(Cu4C2+2)As4S12S | Iso. 43m : I43m |
| Tetrahedrite Subgroup | Cu6(Cu4C2+2)Sb4S12S | Iso. 43m : I43m |
| Ústalečite Subgroup | (Cu4(◻,Cu)2(Cu4Cu+2)((Te,Sb,As)2Te2)Se12Se | |
| Zvěstovite Subgroup | (Ag6,[Ag6]4+)(Ag4 C2+2)As4S12S0-1 |
Giraudite Subgroup Members:
| Giraudite-(Zn) | Cu6(Cu4Zn2)As4Se12Se | Iso. 43m : I43m |
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 Giraudite Subgroup
mindat.org URL:
https://www.mindat.org/min-54911.html
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References for Giraudite Subgroup
Reference List:
Localities for Giraudite Subgroup
Showing 10 localities.
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The 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).
All localities listed without proper references should be considered as questionable.
Czech Republic | |
| [Giraudite-(Zn)] Škácha et al. (2017) |
| [Giraudite-(Zn)] Škácha et al. (2017) |
| [Giraudite-(Zn)] Sejkora et al. (2022) |
| [Giraudite-(Zn)] Bindi et al. (2016) |
France | |
| [Giraudite-(Zn)] Johan et al. (1982) +1 other reference |
Germany | |
| [Giraudite-(Zn)] Can Min 40 et al. (2002) +1 other reference |
| [Giraudite-(Zn)] Forster et al. (2004) |
Mexico | |
| [Giraudite-(Zn)] Camprubi |
| [Giraudite-(Zn)] Braith et al. (2001) |
USA | |
| [Giraudite-(Zn)] Castor et al. (2004) |
Chaméane Uranium Deposit, Le Vernet-Chaméane, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France