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![The hydration process of M-Fe 2 (SO 4 ) 3 as recorded by time-resolved XRD...]()
![Synchrotron X-ray-diffraction pattern (taken at room temperature) of the mi...]()
![The Raman spectra of rhomboclase at 10.5 mW (a), coquimbite at 10.5 mW (b),...]()
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![XRD data showing the hydration process of M-Fe 2 (SO 4 ) 3 at 53% RH. Seve...]()
![A schematic representation of the structure of <span class="search-highlight">ferricopiapite</span>. The infinite...]()
![STATISTICS OF RIETVELD REFINEMENT AND STRUCTURAL DATA FOR <span class="search-highlight">FERRICOPIAPITE</span>, F...]()
![Neutron-diffraction pattern (taken at room temperature) of <span class="search-highlight">ferricopiapite</span> w...]()
![BOND DISTANCES FOR HEAVY ATOMS IN <span class="search-highlight">FERRICOPIAPITE</span>* AND MAGNESIOCOPIAPITE §]()
![HYDROGEN-BONDING SCHEME IN <span class="search-highlight">FERRICOPIAPITE</span>*]()
![FRACTIONAL POSITIONS AND DISPLACEMENT FACTORS FOR ATOMS IN THE FERRICOPIAPI...]()
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![VNIR reflectance spectra of sample RTNP07. The spectra compare to those of ...]()
![Scanning electron micrograph showing magnesiocopiapite (plates 10–50 μm in ...]()
![Stoichiometric coefficients (ν i ’s in equations 1 and 2 ) for component...]()
![Fractional atomic coordinates and isotropic displacement parameters (in Å ...]()
![( a ) Mid-infrared thermal emissivity spectra of sulfates with chains of SO...]()
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ferricopiapite
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Journal Article
AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 October 2006
The Canadian Mineralogist (2006) 44 (5): 1227–1237.
...Juraj Majzlan; Boris Kiefer Abstract We determined the positions of all atoms, including the light ones (D, H), in the crystal structure of synthetic ferricopiapite Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , using X-ray synchrotron [λ 0.64905(1) Å] and neutron (λ2.0787 Å) powder diffraction...
FIGURES
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Journal Article
Thermodynamic properties and crystal structure refinement of ferricopiapite, coquimbite, rhomboclase, and Fe 2 (SO 4 ) 3 (H 2 O) 5
Journal: European Journal of Mineralogy
Published: 01 March 2006
European Journal of Mineralogy (2006) 18 (2): 175–186.
...Juraj MAJZLAN; Alexandra NAVROTSKY; R. Blaine McCLESKEY; Charles N. ALPERS Abstract Enthalpies of formation of ferricopiapite [nominally Fe 4.67 (SO 4 ) 6 (OH) 2 (H 2 O) 20 ], coquimbite [Fe 2 (SO 4 ) 3 (H 2 O) 9 ], rhomboclase [(H 3 O)Fe(SO 4 ) 2 (H 2 O) 3 ], and Fe 2 (SO 4 ) 3 (H 2 O) 5 were...
FIGURES
Image
The hydration process of M-Fe 2 (SO 4 ) 3 as recorded by time-resolved XRD...
in Humidity-induced phase transitions of ferric sulfate minerals studied by in situ and ex situ X-ray diffraction
> American Mineralogist
Published: 01 November 2009
with the initials of corresponding mineral names and diffraction index: F = Ferricopiapite; R = Rhomboclase; K = Kornelite; P = Paracoquimbite. Note that the broad peak at 7° is produced by the scattering from Kapton capillary and the chamber wall. ( a ) M-Fe 2 (SO 4 ) 3 transformed to ferricopiapite
Image
Synchrotron X-ray-diffraction pattern (taken at room temperature) of the mi...
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
F ig . 2. Synchrotron X-ray-diffraction pattern (taken at room temperature) of the mixture of ferricopiapite and rhomboclase, with the calculated and difference plot from the Rietveld refinement. The upper row of tickmarks shows the calculated position of rhomboclase peaks, the lower row
Image
The Raman spectra of rhomboclase at 10.5 mW (a), coquimbite at 10.5 mW (b),...
in THE RAMAN STUDY OF WEATHERING MINERALS FROM THE CORANDA-HONDOL OPEN PIT (CERTEJ GOLD-SILVER DEPOSIT) AND THEIR PHOTOCHEMICAL DEGRADATION PRODUCTS UNDER LASER IRRADIATION
> The Canadian Mineralogist
Published: 15 June 2015
F ig . 1. The Raman spectra of rhomboclase at 10.5 mW (a), coquimbite at 10.5 mW (b), mikasaite at 14 mW (c), copiapite at 7.4 mW (d), ferricopiapite at 7.4 mW (e), intermediate phases between copiapite (ferricopiapite) and mikasaite (f, g), and mikasaite at 18.4 mW (h).
Journal Article
Temperature and humidity effects on ferric sulfate stability and phase transformation
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 February 2012
American Mineralogist (2012) 97 (2-3): 378–383.
...Wenqian Xu; John B. Parise Abstract Evolution of concentrated Fe 2 (SO 4 ) 3 solution, a process including both evaporation of the solution and post-evaporation aging of the precipitates, was studied at 2 and 50 °C under controlled relative humidity (RH). At 50 °C and 42–47% RH, ferricopiapite [Fe...
FIGURES
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Journal Article
Humidity-induced phase transitions of ferric sulfate minerals studied by in situ and ex situ X-ray diffraction
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 November 2009
American Mineralogist (2009) 94 (11-12): 1629–1637.
... with the initials of corresponding mineral names and diffraction index: F = Ferricopiapite; R = Rhomboclase; K = Kornelite; P = Paracoquimbite. Note that the broad peak at 7° is produced by the scattering from Kapton capillary and the chamber wall. ( a ) M-Fe 2 (SO 4 ) 3 transformed to ferricopiapite...
FIGURES
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Image
XRD data showing the hydration process of M-Fe 2 (SO 4 ) 3 at 53% RH. Seve...
in Humidity-induced phase transitions of ferric sulfate minerals studied by in situ and ex situ X-ray diffraction
> American Mineralogist
Published: 01 November 2009
F igure 5. XRD data showing the hydration process of M-Fe 2 (SO 4 ) 3 at 53% RH. Several peaks were marked with the initials of corresponding mineral names, either followed by the index numbers in parentheses or not. F = Ferricopiapite; R = Rhomboclase; K = Kornelite; P = Paracoquimbite
Image
A schematic representation of the structure of ferricopiapite. The infinite...
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
F ig . 1. A schematic representation of the structure of ferricopiapite. The infinite chains are almost perpendicular to the plane of the projection. The sulfate tetrahedra are light grey and the Fe(O,OH,OH 2 ) 6 octahedra are medium grey. The [ A (H 2 O) 6 ] sites are shown as dark octahedra
Image
STATISTICS OF RIETVELD REFINEMENT AND STRUCTURAL DATA FOR FERRICOPIAPITE, F...
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
TABLE 1. STATISTICS OF RIETVELD REFINEMENT AND STRUCTURAL DATA FOR FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD) 2 (D 2 O) 20 , AND RHOMBOCLASE, (D s O 2 )Fe(SO 4 ) 2 (D 2 O 2 ) 2
Image
Neutron-diffraction pattern (taken at room temperature) of ferricopiapite w...
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
F ig . 3. Neutron-diffraction pattern (taken at room temperature) of ferricopiapite with the calculated and difference plot from the Rietveld refinement.
Image
BOND DISTANCES FOR HEAVY ATOMS IN FERRICOPIAPITE* AND MAGNESIOCOPIAPITE §
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
TABLE 4. BOND DISTANCES FOR HEAVY ATOMS IN FERRICOPIAPITE* AND MAGNESIOCOPIAPITE §
Image
HYDROGEN-BONDING SCHEME IN FERRICOPIAPITE*
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
TABLE 6. HYDROGEN-BONDING SCHEME IN FERRICOPIAPITE*
Image
FRACTIONAL POSITIONS AND DISPLACEMENT FACTORS FOR ATOMS IN THE FERRICOPIAPI...
in AN X-RAY- AND NEUTRON-DIFFRACTION STUDY OF SYNTHETIC FERRICOPIAPITE, Fe 14/3 (SO 4 ) 6 (OD,OH) 2 (D 2 O,H 2 O) 20 , AND AB INITIO CALCULATIONS ON THE STRUCTURE OF MAGNESIOCOPIAPITE, MgFe 4 (SO 4 ) 6 (OH) 2 (H 2 O) 20
> The Canadian Mineralogist
Published: 01 October 2006
TABLE 2. FRACTIONAL POSITIONS AND DISPLACEMENT FACTORS FOR ATOMS IN THE FERRICOPIAPITE STRUCTURE AT ROOM TEMPERATURE
Journal Article
Mineralogy and geochemistry of hot spring deposits at Námafjall, Iceland: Analog for sulfate soils at Gusev crater, Mars
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 03 April 2023
American Mineralogist (2023) 108 (4): 637–652.
... minerals have been identified (e.g., ferricopiapite) or inferred (e.g., rhomboclase). * E-mail: lmchenry@uwm.edu . Manuscript handled by Janice L. Bishop 24 10 2021 1 4 2022 14 4 2022 Copyright © 2023 by the Mineralogical Society of America 2023 Mineralogical Society...
FIGURES
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Image
VNIR reflectance spectra of sample RTNP07. The spectra compare to those of ...
in Natural Fe-bearing oxides and sulfates from the Rio Tinto Mars analog site: Critical assessment of VNIR reflectance spectroscopy, laser Raman spectroscopy, and XRD as mineral identification tools
> American Mineralogist
Published: 01 July 2014
Figure 9 VNIR reflectance spectra of sample RTNP07. The spectra compare to those of gypsum (JB556) and ferricopiapite (JB620). (Color online.)
Image
Scanning electron micrograph showing magnesiocopiapite (plates 10–50 μm in ...
Published: 01 January 2000
Figure 7. Scanning electron micrograph showing magnesiocopiapite (plates 10–50 μm in diameter) and Al-bearing ferricopiapite (spheroidal rosettes). Reproduced with permission from Robinson (1999) .
Image
Stoichiometric coefficients (ν i ’s in equations 1 and 2 ) for component...
in Thermodynamic properties and crystal structure refinement of ferricopiapite, coquimbite, rhomboclase, and Fe 2 (SO 4 ) 3 (H 2 O) 5
> European Journal of Mineralogy
Published: 01 March 2006
Table 13. Stoichiometric coefficients (ν i ’s in equations 1 and 2 ) for components for estimation of entropy for Fe III sulfates. The formulae of rhomboclase, ferricopiapite, and coquimbite are given in Table 8 .
Image
Fractional atomic coordinates and isotropic displacement parameters (in Å ...
in Thermodynamic properties and crystal structure refinement of ferricopiapite, coquimbite, rhomboclase, and Fe 2 (SO 4 ) 3 (H 2 O) 5
> European Journal of Mineralogy
Published: 01 March 2006
Table 3. Fractional atomic coordinates and isotropic displacement parameters (in Å 2 ) for ferricopiapite. Occupancy of the sites is 1 unless noted otherwise. Space group and lattice parameters are given in Table 1 .
Image
( a ) Mid-infrared thermal emissivity spectra of sulfates with chains of SO...
in Mid-infrared emission spectroscopy and visible/near-infrared reflectance spectroscopy of Fe-sulfate minerals
> American Mineralogist
Published: 01 January 2015
Figure 3 ( a ) Mid-infrared thermal emissivity spectra of sulfates with chains of SO 4 tetrahedra and MX 6 octahedra, including amarantite, zincobotryogen, butlerite, parabutlerite, copiapite/ferricopiapite, magnesiocopiapite, and sideronatrite. In addition, the crystal structure diagrams
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