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Trébeurdenite

A valid IMA mineral species
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02243310017272005408495.jpg
Trébeurdenite, etc.

Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
06127410017272472199909.jpg
Trébeurdenite, etc.

Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
02243310017272005408495.jpg
Trébeurdenite, etc.

Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
06127410017272472199909.jpg
Trébeurdenite, etc.

Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
02243310017272005408495.jpg
Trébeurdenite, etc.

Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
06127410017272472199909.jpg
Trébeurdenite, etc.

Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
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About TrébeurdeniteHide

05026150017272472203399.jpg
The town of Trebeurden.

Île Aval, Penvern, Pleumeur-Bodou, Lannion, Côtes-d'Armor, Brittany, France
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).


Name EncodingHide

ASCII-7:
Trebeurdenite

Unique IdentifiersHide

Mindat ID:
43293
Long-form identifier:
mindat:1:1:43293:1

IMA Classification of TrébeurdeniteHide

Classification of TrébeurdeniteHide

Strunz-mindat (2026):
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

Mineral SymbolsHide

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

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

Physical Properties of TrébeurdeniteHide

Lustre:
Earthy
Transparency:
Translucent, Opaque
Colour:
Grey-green
Streak:
Grey-green

Chemistry of TrébeurdeniteHide

Mindat Formula:
Fe2+2Fe3+4O2(OH)10CO3 · 3H2O
Element Weights:
Element% weight
Fe51.455 %
O44.225 %
H2.477 %
C1.844 %

Calculated from ideal end-member formula.
Elements listed:
C, Fe, H, O - search for minerals with similar chemistry

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

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]

Type Occurrence of TrébeurdeniteHide

Synonyms of TrébeurdeniteHide

Other Language Names for TrébeurdeniteHide

Relationship of Trébeurdenite to other SpeciesHide

Member of:
Fougèrite Group > Hydrotalcite Supergroup
Other Members of Fougèrite Group:
FougèriteFe2+4Fe3+2(OH)12[CO3] · 3H2OTrig. 3m (3 2/m) : R3m
MössbaueriteFe3+6O4(OH)8[CO3] · 3H2O Trig. 3

Common AssociatesHide

Associations Based on Photo Data:
3 photos of Trébeurdenite associated with MössbaueriteFe3+6O4(OH)8[CO3] · 3H2O

Related Minerals - Strunz-mindat GroupingHide

4.FL.Mariakrite[Ca4Al2(OH)12(H2O)4][Fe2S4]Tric. 1 : P1
4.FL.05MuskoxiteMg7Fe4O13 · 10H2OTrig. 3m (3 2/m)
4.FL.05JamboriteNi2+1-xCo3+x(OH)2-x(SO4)x · nH2OTrig. 3m (3 2/m) : R3m
4.FL.05MössbaueriteFe3+6O4(OH)8[CO3] · 3H2O Trig. 3
4.FL.05MeixneriteMg6Al2(OH)16(OH)2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05WoodalliteMg6Cr2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05FougèriteFe2+4Fe3+2(OH)12[CO3] · 3H2OTrig. 3m (3 2/m) : R3m
4.FL.05DritsiteLi2Al4(OH)12Cl2 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
4.FL.05RotemiteCa4Cr2(OH)12Cl2 · 4H2OTrig. 3m (3 2/m) : R3c
4.FL.05IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.10HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2OMon. 2/m : P2/b
4.FL.15KuzeliteCa4Al2(OH)12[SO4] · 6H2OTrig.
4.FL.20Jianshuiite(Mg,Mn,Ca)Mn3O7 · 3H2OTrig. 3 : R3
4.FL.20ErnienickeliteNiMn3O7 · 3H2OTrig. 3 : R3
4.FL.20AuroriteMn2+Mn4+3O7 · 3H2OTrig. 3 : R3
4.FL.20ChalcophaniteZnMn4+3O7 · 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.30 va'Lampadite'Cu, Mn, O, H
4.FL.35'Buserite'Na4Mn14O27 · 21H2O
4.FL.40Takanelite(Mn,Ca)Mn4O9 · H2OHex.
4.FL.40Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2OTrig. 3 : P3
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.65LeisingiteCu2MgTe6+O6 · 6H2OTrig. 3 : P3
4.FL.70Magnesiohongruiite-(Fe3+)(Mg2Fe3+)Fe3+NbO7(OH)Hex. 6mm : P63mc
4.FL.70AkdalaiteAl10O14(OH)2Hex.
4.FL.75CafetiteCaTi2O5 · H2OMon. 2/m : P21/b
4.FL.80MouriteUMo5O12(OH)10Mon. 2/m : P2/b
4.FL.85DeloryiteCu4(UO2)(MoO4)2(OH)6Mon. 2/m : B2/m
4.FL.90LagalyiteCa2xMn1-xO2 · 1.5-2H2OMon.
4.FL.95'Tunnerite (of Cornu)'
4.FL.100CarbocalumiteCa4Al2(OH)12(CO3) · 6H2OTrig. 3m (3 2/m) : R3c
4.FL.100MampsisiteCa4Al2(CO3)(OH)12 · 5H2OTric. 1 : P1

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 TrébeurdeniteHide

References for TrébeurdeniteHide

Localities for TrébeurdeniteHide

Showing 8 localities.

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.
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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.
France
 
  • Brittany
    • Côtes-d'Armor
      • Dinan
        • Lancieux
Génin et al. (2014)
      • Lannion
        • Pleumeur-Bodou
          • Penvern
Mills et al. (2012)
        • Plougrescant
Génin et al. (2014)
        • Trébeurden
Personal communication from geologist Odile Guérin to Erik Vercammen (August 2016)
        • Trédrez-Locquémeau
Génin et al. (2014)
    • Ille-et-Vilaine
      • Saint-Malo
Génin et al. (2014)
  • Normandy
    • Manche
      • Avranches
        • Carolles
Génin et al. (2014)
        • Le Mont-Saint-Michel
Génin et al. (2014)
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