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Trébeurdenite

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About TrébeurdeniteHide

Formula:
Fe2+2Fe3+4O2(OH)10CO3·3H2O
Colour:
grey-green
Lustre:
Earthy
Crystal System:
Trigonal
Name:
Named for the township of Trebeurden, near the maritime marsh where the mineral was first found.
The mineral formerly described as fougèrite has been found to be an intimate intergrowth of two phases with distinct Fe2+:Fe3+ ratios. The phase with Fe2+:Fe3+ = 2:1 retains the name fougèrite; that with Fe2+:Fe3+ = 1:2 is defined as the new species trébeurdenite. Both belong to the Fougèrite Group (Mills et al., 2012).


Classification of TrébeurdeniteHide

Approved
Approval Year:
2012
4.FL.

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
L : Hydroxides with H2O +- (OH); sheets of edge-sharing octahedra

Physical Properties of TrébeurdeniteHide

Earthy
Transparency:
Translucent, Opaque
Colour:
grey-green
Streak:
grey-green

Chemical Properties of TrébeurdeniteHide

Formula:
Fe2+2Fe3+4O2(OH)10CO3·3H2O
IMA Formula:
Fe2+2Fe3+4O2(OH)10(CO3) · 3H2O

Crystallography of TrébeurdeniteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 3.173 Å, c = 22.695 Å
Ratio:
a:c = 1 : 7.153
Unit Cell V:
197.88 ų
Z:
3

Type Occurrence of TrébeurdeniteHide

Place of Conservation of Type Material:
The holotype specimen M52133 is accessioned in the collections of Museum Victoria.

Synonyms of TrébeurdeniteHide

Relationship of Trébeurdenite to other SpeciesHide

Other Members of this group:
FougèriteFe2+4Fe3+2(OH)12[CO3]·3H2OTrig. 3m (3 2/m) : R3m
MössbaueriteFe3+6O4(OH)8[CO3] · 3H2O Trig. 3

Common AssociatesHide

Associated Minerals Based on Photo Data:
Mössbauerite2 photos of Trébeurdenite associated with Mössbauerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.FL.05WoodalliteMg6Cr2(OH)16Cl2 · 4H2OTrig.
4.FL.05IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05JamboriteNi2+1-xCo3+x(OH)2-x(SO4)x · nH2OTrig. 3m (3 2/m) : R3m
4.FL.05MeixneriteMg6Al2(OH)16(OH)2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05MuskoxiteMg7Fe4O13 · 10H2OTrig. 3m (3 2/m)
4.FL.05FougèriteFe2+4Fe3+2(OH)12[CO3]·3H2OTrig. 3m (3 2/m) : R3m
4.FL.10HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2OMon. 2 : P21
4.FL.15KuzeliteCa4Al2(OH)12[SO4] · 6H2OTrig.
4.FL.20Aurorite(Mn2+,Ag,Ca)Mn4+3O7 · 3H2OTrig. 3 : R3
4.FL.20Chalcophanite(Zn,Fe,Mn)Mn3O7 · 3H2OTrig. 3 : R3
4.FL.20ErnienickeliteNiMn3O7 · 3H2OTrig. 3 : R3
4.FL.20Jianshuiite(Mg,Mn,Ca)Mn3O7 · 3H2OTrig. 3 : R3
4.FL.25WoodruffiteZn2+x/2(Mn4+1-xMn3+x)O2·yH2OMon. 2/m : B2/m
4.FL.30Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2OHex.
4.FL.35BuseriteNa4Mn14O27 · 21H2O
4.FL.40Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2OTrig. 3 : P3
4.FL.40Takanelite(Mn,Ca)Mn4O9 · H2OHex.
4.FL.45Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2OMon. 2/m : B2/m
4.FL.55CianciulliiteMn(Mg,Mn)2Zn2(OH)10 · 2-4H2OMon. 2/m : B2/m
4.FL.60JenseniteCu3[TeO6] · 2H2OMon. 2/m : P21/m
4.FL.65LeisingiteCuMg2Te6+O6 · 6H2OTrig. 3 : P3
4.FL.70Akdalaite5Al2O3 · H2OHex.
4.FL.75CafetiteCaTi2O5 · H2OMon. 2/m : P21/b
4.FL.80MouriteUMo5O12(OH)10Mon.
4.FL.85DeloryiteCu4(UO2)(MoO4)2(OH)6Mon.

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.

References for TrébeurdeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.
Mills, S. J. (2016) To rust or not to rust : la trébeurdenite et la mössbauerite, deux nouvelles espèces de Bretagne et Normandie. Le Cahier des Micromonteurs, 131, 3–7.

Internet Links for TrébeurdeniteHide

Localities for TrébeurdeniteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
France
 
  • Brittany
    • Côtes-d'Armor
      • Lancieux
Génin, J. M., Mills, S. J., Christy, A. G., Guérin, O., Herbillon, A. J., Kuzmann, E., ... & Upadhyay, C. (2014). Mössbauerite, Fe3+ 6O4 (OH) 8 [CO3]· 3H2O, the fully oxidized'green rust'mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78(2), 447-465.
      • Pleumeur-Bodou
        • Penvern
Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.
      • Plougrescant
Génin, J. M., Mills, S. J., Christy, A. G., Guérin, O., Herbillon, A. J., Kuzmann, E., ... & Upadhyay, C. (2014). Mössbauerite, Fe3+ 6O4 (OH) 8 [CO3]· 3H2O, the fully oxidized'green rust'mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78(2), 447-465.
      • Trébeurden
Personal communication from geologist Odile Guérin to Erik Vercammen (August 2016)
      • Trédrez-Locquémeau
Génin, J. M., Mills, S. J., Christy, A. G., Guérin, O., Herbillon, A. J., Kuzmann, E., ... & Upadhyay, C. (2014). Mössbauerite, Fe3+ 6O4 (OH) 8 [CO3]· 3H2O, the fully oxidized'green rust'mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78(2), 447-465.
    • Ille-et-Vilaine
      • Mont Saint-Michel Bay
Génin, J.-M.R., Mills, S.J., Christy, A.G., Guérin, O., Herbillon, A.J., Kuzmann, E., Ona-Nguema, G., Ruby, C., Upadhyay, C. (2014): Mössbauerite, Fe3+6O4(OH)8(CO3)∙3H2O, the fully oxidized ‘green rust’ mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78, 447-465.
      • Saint-Malo
Génin, J. M., Mills, S. J., Christy, A. G., Guérin, O., Herbillon, A. J., Kuzmann, E., ... & Upadhyay, C. (2014). Mössbauerite, Fe3+ 6O4 (OH) 8 [CO3]· 3H2O, the fully oxidized'green rust'mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78(2), 447-465.
  • Normandy
    • Manche
Génin, J. M., Mills, S. J., Christy, A. G., Guérin, O., Herbillon, A. J., Kuzmann, E., ... & Upadhyay, C. (2014). Mössbauerite, Fe3+ 6O4 (OH) 8 [CO3]· 3H2O, the fully oxidized'green rust'mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78(2), 447-465.
Mineral and/or Locality  
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