Kenoargentotetrahedrite-(Fe) (original) (raw)

A valid IMA mineral species

About Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

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.

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).

Co-Type Localities:

ⓘ Himmelsfürst Mine, Brand-Erbisdorf, Mittelsachsen, Saxony, Germany
ⓘ Hab Acht Mine, Beschert Glück Mine, Zug, Freiberg, Mittelsachsen, Saxony, Germany

Unique IdentifiersHide

This section is currently hidden. Click the show button to view.

Long-form identifier:

mindat:1:1:53610:3

059e7a93-3800-47c3-a810-024a2a3024d7

IMA Classification of Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

IMA status notes:

Redefined by the IMA, Renamed by the IMA

IMA Formula:

Ag6(Cu4Fe2)Sb4S12◻

Type description reference:

Biagioni, Cristian, George, Luke L., Cook, Nigel J., Makovicky, Emil, Moëlo, Yves, Pasero, Marco, Sejkora, Jiří, Stanley, Chris J., Welch, Mark D., Bosi, Ferdinando (2020) The tetrahedrite group: Nomenclature and classification. American Mineralogist, 105 (1) 109-122 doi:10.2138/am-2020-7128

Classification of Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

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

This section is currently hidden. Click the show button to view.

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

Chemistry of Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

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.

Crystallography of Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

Class (H-M):

43_m_ - Hextetrahedral

Cell Parameters:

a = 10.4930(4) Å

Comment:

Space group by analogy with other members of Tetrahedrite group. Cell parameters from 'freibergite' of Welch et al 2018.

Geological EnvironmentHide

This section is currently hidden. Click the show button to view.

Type Occurrence of Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

Co-Type Localities:

ⓘ Himmelsfürst Mine, Brand-Erbisdorf, Mittelsachsen, Saxony, Germany
ⓘ Hab Acht Mine, Beschert Glück Mine, Zug, Freiberg, Mittelsachsen, Saxony, Germany

Place of Conservation of Type Material:

Senchenberg Museum collection, Frankfurt, Germany, 2289sa.
British Museum Natural History, London, UK, BM88668.

Reference:

Biagioni, C., George, L. L., Cook, N. J., Makovicky, E., Moëlo, Y., Pasero, M., ... & Bosi, F. (2020). The tetrahedrite group: Nomenclature and classification. American Mineralogist, 105(1), 109-122.

Other Language Names for Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

Relationship of Kenoargentotetrahedrite-(Fe) to other SpeciesHide

This section is currently hidden. Click the show button to view.

Other Members of this group:

Common AssociatesHide

This section is currently hidden. Click the show button to view.

Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

This section is currently hidden. Click the show button to view.

Other InformationHide

This section is currently hidden. Click the show button to view.

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

This section is currently hidden. Click the show button to view.

References for Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

Reference List:

Biagioni, Cristian, George, Luke L., Cook, Nigel J., Makovicky, Emil, Moëlo, Yves, Pasero, Marco, Sejkora, Jiří, Stanley, Chris J., Welch, Mark D., Bosi, Ferdinando (2020) The tetrahedrite group: Nomenclature and classification. American Mineralogist, 105 (1) 109-122 doi:10.2138/am-2020-7128

Shu, Z., Shen, C., Lu, A., & Gu, X. (2022). Chemical Composition and Crystal Structure of Kenoargentotetrahedrite-(Fe), Ag6Cu4Fe2Sb4S12, from the Bajiazi Pb-Zn Deposit, Liaoning, China. Crystals, 12(4), 467.

Localities for Kenoargentotetrahedrite-(Fe)Hide

This section is currently hidden. Click the show button to view.

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 section is currently hidden. Click the show button to view.

- 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.