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![Cations in the octahedral layer of <span class="search-highlight">fougèrite</span> ( F ), trébeurdenite ( T ) and...]()
![SEM image of <span class="search-highlight">fougerite</span> particles (hexagonal crystals); particle size is ~50...]()
![Location of <span class="search-highlight">fougerite</span> in the pathways of formation of Fe oxides ( s.l .). A...]()
![(a) Diagram for the ternary system Mg(OH) 2 -Fe(OH) 2 -Fe(OH) 3 . Solid lin...]()
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![Schematic drawing of the Mössbauer borehole investigation setup to study th...]()
![XRD patterns of the clay fraction for “Sample 4” from Fougères (reprinted ...]()
![( a ) Fe-K edge XANES spectra of synthetic GR(CO 3 2− ) and GR mineral “fo...]()
![Fourier filtered Fe-(Fe,Mg) contributions to EXAFS for GR mineral “<span class="search-highlight">fougerit</span>...]()
![Type locality at Fougères: soil profile with blue-green Gr horizon contain...]()
![Type locality at Fougères: soil profile with blue-green Gr horizon contain...]()
![Fe-K pseudo-radial distribution functions (PRDF) for synthetic GRs [GR(CO 3...]()
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![Structures of GR1 and GR2. (a) Stacking sequence for the crystal structure ...]()
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1-20 OF 60 RESULTS FOR
fougerite
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1
Journal Article
REPLY TO THE LETTER TO THE EDITOR BY CHRISTIANSEN, DIDERIKSEN, SKOVBJERG, NEDEL, AND STIPP: “ON FOUGERITE”
Journal: Clays and Clay Minerals
Publisher: Clay Minerals Society
Published: 01 February 2011
Clays and Clay Minerals (2011) 59 (1): 10–12.
... activity, and GRs are a key factor in this Fe cycle. Trolard et al. (2007) demonstrated the presence of GR as a natural mineral, while GRs were previously only known as synthetic compounds. This does not imply that 100% of the Fe is present as fougerite. The presence of other Fe (oxyhydr)oxides and clay...
Journal Article
ON FOUGERITE
Journal: Clays and Clay Minerals
Publisher: Clay Minerals Society
Published: 01 February 2011
Clays and Clay Minerals (2011) 59 (1): 3–9.
...B. C. Christiansen; K. Dideriksen; L. L. Skovbjerg; S. Nedel; S. L. S. Stipp Abstract Fougerite (IMA 2003-057) was accepted by the Commission on New Minerals and Mineral Names of the International Mineralogical Association (IMA) in 2004 as a new mineral to represent the green rust (GR) family...
FIGURES
Journal Article
FOUGERITE, A NEW MINERAL OF THE PYROAURITE-IOWAITE GROUP: DESCRIPTION AND CRYSTAL STRUCTURE
Journal: Clays and Clay Minerals
Publisher: Clay Minerals Society
Published: 01 June 2007
Clays and Clay Minerals (2007) 55 (3): 323–334.
...Fabienne Trolard; Guilhem Bourrié; Mustapha Abdelmoula; Philippe Refait; Frédéric Feder Abstract Fougerite (IMA 2003-057) is a mixed M (II)- M (III) hydroxysalt of the green rust group, where M (II) can be Fe or Mg, and M (III) is Fe. The general structural formula is: [Fe 1− 2+ x Fe x 3+ Mg y...
FIGURES
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Journal Article
A SOLID-SOLUTION MODEL FOR Fe(II)-Fe(III)-Mg(II) GREEN RUSTS AND FOUGERITE AND ESTIMATION OF THEIR GIBBS FREE ENERGIES OF FORMATION
Journal: Clays and Clay Minerals
Publisher: Clay Minerals Society
Published: 01 June 2004
Clays and Clay Minerals (2004) 52 (3): 382–394.
... = 0.9985, N = 4), from which the chemical potential of the mineral fougerite μ is obtained in the limiting case X 3 = 0, and knowing μ o 1 = −489.8 kJmol −1 for Fe(OH) 2 , and μ o 3 = −832.16 kJmol −1 for Mg(OH) 2 , the two unknown thermodynamic parameters of the solid-solution model are determined as: μ o...
FIGURES
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Journal Article
Mössbauerite, Fe 6 3 + O 4 (OH) 8 [CO 3 ]·3H 2 O, the fully oxidized ‘green rust’ mineral from Mont Saint-Michel Bay, France
Journal: Mineralogical Magazine
Published: 01 April 2014
Mineralogical Magazine (2014) 78 (2): 447–465.
...J.-M. R. Génin; S. J. Mills; A. G. Christy; O. Guérin; A. J. Herbillon; E. Kuzmann; G. Ona-Nguema; C. Ruby; C. Upadhyay Abstract The new mineral mössbauerite (IMA2012–049), Fe 6 3 + O 4 (OH) 8 [CO 3 ]·3H 2 O, is a member of the fougèrite group of the hydrotalcite supergroup. Thus, it has a layered...
FIGURES
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Image
Cations in the octahedral layer of fougèrite ( F ), trébeurdenite ( T ) and...
in Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides
> Mineralogical Magazine
Published: 01 October 2012
F ig . 15. Cations in the octahedral layer of fougèrite ( F ), trébeurdenite ( T ) and mössbauerite ( M ), showing the two-dimensional superstructures that arise if Fe 2+ and Fe 3+ order as in Fig. 9 and D 2 and D 3 environments which are clustered near interlayer carbonate. Arrows
Image
SEM image of fougerite particles (hexagonal crystals); particle size is ~50...
in FOUGERITE, A NEW MINERAL OF THE PYROAURITE-IOWAITE GROUP: DESCRIPTION AND CRYSTAL STRUCTURE
> Clays and Clay Minerals
Published: 01 June 2007
Figure 2. SEM image of fougerite particles (hexagonal crystals); particle size is ~500 nm.
Image
Location of fougerite in the pathways of formation of Fe oxides ( s.l .). A...
in FOUGERITE, A NEW MINERAL OF THE PYROAURITE-IOWAITE GROUP: DESCRIPTION AND CRYSTAL STRUCTURE
> Clays and Clay Minerals
Published: 01 June 2007
Figure 5. Location of fougerite in the pathways of formation of Fe oxides ( s.l .). Abscissa: mole ratio O/(O+OH), increasing condensation by oxylation from left to right. Ordinate: mole ratio of Fe 3+ /Fe total , increasing oxidation from the bottom to the top. Fougerite and ferrihydrite appear
Image
(a) Diagram for the ternary system Mg(OH) 2 -Fe(OH) 2 -Fe(OH) 3 . Solid lin...
in FOUGERITE, A NEW MINERAL OF THE PYROAURITE-IOWAITE GROUP: DESCRIPTION AND CRYSTAL STRUCTURE
> Clays and Clay Minerals
Published: 01 June 2007
of the composition of synthetic green rusts; B, C and D: different compositions of green rusts; N → P : oxidation path of fougerite. (b) Ternary diagram of the stability of fougerite derived from Mössbauer data (dotted lines), a solid-solution model (solid line and long dashed lines, see also Figure 4a
Journal Article
Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides
Journal: Mineralogical Magazine
Published: 01 October 2012
Mineralogical Magazine (2012) 76 (5): 1289–1336.
...F ig . 15. Cations in the octahedral layer of fougèrite ( F ), trébeurdenite ( T ) and mössbauerite ( M ), showing the two-dimensional superstructures that arise if Fe 2+ and Fe 3+ order as in Fig. 9 and D 2 and D 3 environments which are clustered near interlayer carbonate. Arrows...
FIGURES
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Image
Schematic drawing of the Mössbauer borehole investigation setup to study th...
in Field-portable Mössbauer spectroscopy on Earth, the Moon, Mars, and beyond
> Geochemistry: Exploration, Environment, Analysis
Published: 01 May 2011
Fig. 9 Schematic drawing of the Mössbauer borehole investigation setup to study the seasonal variation of oxidation states in the mixed-valence green rust mineral fougerite in the field (figure modified from Feder et al . 2005 ).
Image
XRD patterns of the clay fraction for “Sample 4” from Fougères (reprinted ...
Published: 01 February 2011
Figure 1. XRD patterns of the clay fraction for “Sample 4” from Fougères (reprinted from Trolard and Bourrié, 2008 , with permission from Elsevier). This figure is claimed to show clearly peaks of fougerite (green rust) at ~13°2𝛉 (black arrow), but no such peak is “clear” in the raw pattern.
Image
( a ) Fe-K edge XANES spectra of synthetic GR(CO 3 2− ) and GR mineral “fo...
in Mössbauer and XAS study of a green rust mineral; the partial substitution of Fe 2+ by Mg 2+
> American Mineralogist
Published: 01 May 2001
F igure 2. ( a ) Fe-K edge XANES spectra of synthetic GR(CO 3 2− ) and GR mineral “fougerite” compared to those of reference compounds, FeCl 2 and goethite. Part b is the same as part a but with expanded scale and focused on the pre-edge peak region.
Image
Fourier filtered Fe-(Fe,Mg) contributions to EXAFS for GR mineral “fougerit...
in Mössbauer and XAS study of a green rust mineral; the partial substitution of Fe 2+ by Mg 2+
> American Mineralogist
Published: 01 May 2001
F igure 5. Fourier filtered Fe-(Fe,Mg) contributions to EXAFS for GR mineral “fougerite” fitted with ( a ) only Fe-Fe contribution, ( b ) only Fe-Mg contribution and, ( c ) Fe and Mg contributions. Dotted lines = experimental curve; solid line = fit.
Image
Type locality at Fougères: soil profile with blue-green Gr horizon contain...
Published: 01 August 2007
Figure 1. Type locality at Fougères: soil profile with blue-green Gr horizon containing fougerite. At the surface, litter made of beech leaves, overlying an organo-mineral horizon (0–15 cm) and the horizon showing gleyic, specifically reductomorphic properties Gr (15–30 cm). The groundwater
Image
Type locality at Fougères: soil profile with blue-green Gr horizon contain...
in FOUGERITE, A NEW MINERAL OF THE PYROAURITE-IOWAITE GROUP: DESCRIPTION AND CRYSTAL STRUCTURE
> Clays and Clay Minerals
Published: 01 June 2007
Figure 1. Type locality at Fougères: soil profile with blue-green Gr horizon containing fougerite. At the surface, litter made of beech leaves, overlying an organo-mineral horizon (0–15 cm) and the horizon showing gleyic, specifically reductomorphic properties Gr (15–30 cm). The groundwater
Image
Fe-K pseudo-radial distribution functions (PRDF) for synthetic GRs [GR(CO 3...
in Mössbauer and XAS study of a green rust mineral; the partial substitution of Fe 2+ by Mg 2+
> American Mineralogist
Published: 01 May 2001
F igure 3. Fe-K pseudo-radial distribution functions (PRDF) for synthetic GRs [GR(CO 3 2− ) and GR(Cl − )], GR mineral “fougerite” and synthetic pyroaurite. PRDF are not corrected for phase shift functions. The real interatomic distances can be found approximately by adding about 0.04 nm
Journal Article
Field-portable Mössbauer spectroscopy on Earth, the Moon, Mars, and beyond
Publisher: Geological Society of London
Published: 01 May 2011
Geochemistry: Exploration, Environment, Analysis (2011) 11 (2): 129–143.
...Fig. 9 Schematic drawing of the Mössbauer borehole investigation setup to study the seasonal variation of oxidation states in the mixed-valence green rust mineral fougerite in the field (figure modified from Feder et al . 2005 ). ...
FIGURES
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Image
Structures of GR1 and GR2. (a) Stacking sequence for the crystal structure ...
in A SOLID-SOLUTION MODEL FOR Fe(II)-Fe(III)-Mg(II) GREEN RUSTS AND FOUGERITE AND ESTIMATION OF THEIR GIBBS FREE ENERGIES OF FORMATION
> Clays and Clay Minerals
Published: 01 June 2004
Figure 1. Structures of GR1 and GR2. (a) Stacking sequence for the crystal structure of the GR1(OH) mineral, fougerite, in the limiting case Fe 3 (OH) 7 ; (b) position of water molecules and OH − ions in an interlayer viewed along [001]; only one interlayer, one OH − and one Fe layer below
Journal Article
Changing the properties of samples after extraction from wet soil: a short review
Publisher: Geological Society of London
Published: 05 August 2020
Geochemistry: Exploration, Environment, Analysis (2020) 20 (4): 399–407.
... al. 1997 ; Feder et al. 2005 ; Trolard and Bourrie 2008 ). Nuclear gamma resonance (NGR) analysis revealed a seasonal formation of the carbonate green rust in this soil. This Fe(II)-ephemer was registered as fougerite. The soil profile was the following ( Feder et al. 2005 ): the organic...
FIGURES
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