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fluorophlogopite

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Journal Article

Fluorophlogopite-bearing and carbonate metamorphosed xenoliths from the Campanian Ignimbrite (Fiano, southern Italy): crystal chemical, geochemical and volcanological insights

M. Lacalamita, G. Balassone, E. Schingaro, E. Mesto, A. Mormone, M. Piochi, G. Ventruti, M. Joachimski
Published: 01 October 2017
Mineralogical Magazine (2017) 81 (5): 1165–1189.
DOI: https://doi.org/10.1180/minmag.2016.080.155
.... These rocks originated from Mesozoic limestones of the Campanian Apennines, embedded in a fluid flow. The Fiano xenoliths studied consist of ten fluorophlogopite-bearing calc-silicate rocks and five carbonate xenoliths, characterized by combining mineralogical analyses with whole-rock and stable isotope data...
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Diagenetic formation of interlayer-deficient fluorophlogopite as a clay mineral in Early Cambrian phosphorite (Lesser Himalaya, India): The trioctahedral analog of illite

Gerhard Franz, Dorothee Hippler, Dieter Rhede, Richard Wirth, Dhiraj Mohan Banerjee, Nicolaj Mahlstedt
Published: 01 November 2014
American Mineralogist (2014) 99 (11-12): 2353–2368.
DOI: https://doi.org/10.2138/am-2014-4852
... and chemical composition of the extremely fine-grained material, earlier descriptions based on separated material are equivocal. Here we describe low-temperature (diagenetic) formation of fluorophlogopite, which is interlayer-deficient and therefore analogous to illite, using high-resolution in situ methods...
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Fluorophlogopite from Piano delle Concazze (Mt. Etna, Italy): Crystal chemistry and implications for the crystallization conditions

Fernando Scordari, Emanuela Schingaro, Gennaro Ventruti, Eugenio Nicotra, Marco Viccaro, Simona Mazziotti Tagliani
Published: 01 May 2013
American Mineralogist (2013) 98 (5-6): 1017–1025.
DOI: https://doi.org/10.2138/am.2013.4225
... carriers in magmatic rocks. In the present study, a full crystal chemical investigation of fluorophlogopite 1 M from Piano delle Concazze, Mt. Etna volcano, Italy, is carried out. The fluorophlogopite occurs in a benmoreitic lava from prehistoric volcanic activity at Mt. Etna (post-caldera forming phase...
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Crystal chemistry of Ti-rich fluorophlogopite from Presidente Olegario, Alto Paranaíba igneous province, Brazil

E. Schingaro, M. Lacalamita, F. Scordari, M.F. Brigatti, G. Pedrazzi
Published: 01 May 2011
American Mineralogist (2011) 96 (5-6): 732–743.
DOI: https://doi.org/10.2138/am.2011.3666
...E. Schingaro; M. Lacalamita; F. Scordari; M.F. Brigatti; G. Pedrazzi Abstract Trioctahedral micas from kamafugitic lavas of Presidente Olegario (Brazil) are Ti-Fe-bearing fluorophlogopites. They were investigated using a combination of electron probe microanalysis (EPMA), single-crystal X-ray...
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Fluorophlogopite from Biancavilla (Mt. Etna, Sicily, Italy): Crystal structure and crystal chemistry of a new F-dominant analog of phlogopite

Antonio Gianfagna, Fernando Scordari, Simona Mazziotti-Tagliani, Gennaro Ventruti, Luisa Ottolini
Published: 01 October 2007
American Mineralogist (2007) 92 (10): 1601–1609.
DOI: https://doi.org/10.2138/am.2007.2502
...Antonio Gianfagna; Fernando Scordari; Simona Mazziotti-Tagliani; Gennaro Ventruti; Luisa Ottolini Abstract Fluorophlogopite, a new F-dominant mineral of the mica group, was found at Monte Calvario, Biancavilla, lower southwestern flanks of Mt. Etna volcano (Catania, Sicily, Italy). The mineral...
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Crystal Structure Analysis of Synthetic Fluorophlogopite

James W. McCauley, R. E. Newnham, G. V. Gibbs
Published: 01 April 1973
American Mineralogist (1973) 58 (3-4_Part_1): 249–254.
...James W. McCauley; R. E. Newnham; G. V. Gibbs Abstract The crystal structure of synthetic 1 M-fluorophlogopite has been determined from singlecrystal diffractometer data and refined to a weighted R-factor of 6.1 percent by least-squares methods. Fluorophlogopite, KMg 3 AlSi 3 O 10 F 2 possesses...
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STEM&#x2F;HRTEM images and FFT patterns of the <span class="search-highlight">fluorophlogopite</span> synthesized at 1...

STEM/HRTEM images and FFT patterns of the fluorophlogopite synthesized at 1...

Published: 01 June 2021
Figure 8. STEM/HRTEM images and FFT patterns of the fluorophlogopite synthesized at 1450 °C. ( a ) STEM image of the synthetic fluorophlogopite. ( b ) HRTEM image enlarged from the marked area of nanoflake 6 in a . The inset (upper right) is the enlarged image of the yellow square (around
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TEM&#x2F;HRTEM images and SAED&#x2F;FFT patterns of the <span class="search-highlight">fluorophlogopite</span> synthesized ...

TEM/HRTEM images and SAED/FFT patterns of the fluorophlogopite synthesized ...

Published: 01 June 2021
Figure 7. TEM/HRTEM images and SAED/FFT patterns of the fluorophlogopite synthesized at 1450 °C. ( a ) TEM image and SAED/FFT patterns (insets) of the synthetic fluorophlogopite. FFT pattern (upper lift) was taken from nano-flakes 1–4 (projection down the [130] direction), and SAED pattern (lower
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BSE images ( a and b ) and X-ray mapping ( c–f ), showing <span class="search-highlight">fluorophlogopit</span>...

BSE images ( a and b ) and X-ray mapping ( c–f ), showing fluorophlogopit...

Published: 01 November 2014
Figure 4 BSE images ( a and b ) and X-ray mapping ( c–f ), showing fluorophlogopite in the textural position surrounding illite. ( a ) Fluorophlogopite is surrounded by apatite (two types, apatite I is botryoidal with high porosity and C org inclusions, apatite II is clear and hypidiomorphic
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SEM-BSE micrographs of the mineral assemblage of the Fiano xenoliths. ( a )...

SEM-BSE micrographs of the mineral assemblage of the Fiano xenoliths. ( a )...

Published: 01 October 2017
Fig. 4. SEM-BSE micrographs of the mineral assemblage of the Fiano xenoliths. ( a ) fluorophlogopite (Phl) and fluorite (Fl) (sample TF2); ( b ) fluorophlogopite with interstitial fluorite and magnetite (Mag) (sample TF2); ( c ) K-bearing fluoro-richterite (Rct) and fluorite (sample TF2); ( d
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Chemical composition of micas from sample DUR-7 (WDS electron microprobe da...

Chemical composition of micas from sample DUR-7 (WDS electron microprobe da...

Published: 01 November 2014
Figure 6 Chemical composition of micas from sample DUR-7 (WDS electron microprobe data), in terms of atoms per formula unit (pfu), calculated on the basis of 22 oxygen. ( a ) The sum of octahedral cations vs. the sum of the interlayer (dominantly K, with minor amounts of NH 4 in fluorophlogopite
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Relationship between the c parameter and the F − +O 2− content. Symbols:...

Relationship between the c parameter and the F − +O 2− content. Symbols:...

Published: 01 May 2013
Figure 3 Relationship between the c parameter and the F − +O 2− content. Symbols: solid squares = fluorophlogopites of this study; open circle = fluorophlogopite from Biancavilla ( Gianfagna et al. 2007 ); triangle pointing upward = SA phlogopite characterized by Ti and Fe 3+ -oxy
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( a ) A typical <span class="search-highlight">fluorophlogopite</span>-bearing sample from Fiano. ( b ) SEM image...

( a ) A typical fluorophlogopite-bearing sample from Fiano. ( b ) SEM image...

Published: 01 October 2017
Fig. 3. ( a ) A typical fluorophlogopite-bearing sample from Fiano. ( b ) SEM image of an aggregate of fluoborite (Flb), fluorophlogopite (Phl) and fluorite (Fl).
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BSE images of <span class="search-highlight">fluorophlogopite</span> in the phosphatic mudstone layer. Image ( a ...

BSE images of fluorophlogopite in the phosphatic mudstone layer. Image ( a ...

Published: 01 November 2014
Figure 3 BSE images of fluorophlogopite in the phosphatic mudstone layer. Image ( a ) shows to the left fluorophlogopite overgrowing illite, to the right a vesicle filled with organic matter, calcite, and fluorophlogopite. ( b ) Enlarged area of a with different contrast to highlight
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HRTEM images of synthetic <span class="search-highlight">fluorophlogopite</span> from a melt. ( a ) Synthetic flu...

HRTEM images of synthetic fluorophlogopite from a melt. ( a ) Synthetic flu...

Published: 01 June 2021
Figure 6. HRTEM images of synthetic fluorophlogopite from a melt. ( a ) Synthetic fluorophlogopite (synthesized at 900 °C) is comprised of domains of nanoparticles with parallel crystallographic orientation, as indicated by FFT pattern (inset). ( b ) The enlarged image of the area marked
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BSE images of Zn-Mn-bearing <span class="search-highlight">fluorophlogopite</span> in the groundmass of a clast o...

BSE images of Zn-Mn-bearing fluorophlogopite in the groundmass of a clast o...

Published: 01 August 2015
Fig. 4. BSE images of Zn-Mn-bearing fluorophlogopite in the groundmass of a clast of porphyritic phonolite (Okt-2). Phl – Zn-Mn-bearing fluorophlogopite; Fl – fluorite; Ap – fluorapatite with a Na- REE -rich rim; for other symbols see Figs 1 and 2 .
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BSE image and X-ray maps showing the relative distribution of selected elem...

BSE image and X-ray maps showing the relative distribution of selected elem...

Published: 01 January 2010
Fig. 4. BSE image and X-ray maps showing the relative distribution of selected elements in the fluorophlogopite crystal and the surrounding amorphous phase. It is noteworthy that the distribution of almost all the elements is rather constant for fluorophlogopite, whereas different concentrations
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HAADF ( a and b ) and dark-field ( c ) images of <span class="search-highlight">fluorophlogopite</span>-illite ...

HAADF ( a and b ) and dark-field ( c ) images of fluorophlogopite-illite ...

Published: 01 November 2014
Figure 8 HAADF ( a and b ) and dark-field ( c ) images of fluorophlogopite-illite intergrowths in a vesicle filled with organic matter (C org) at the border to apatite, from the phosphatic mudstone layer (see Fig. 2e ). Mica layer packages are irregularly oriented and vary in length and width
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(a) Variation of Mg# and Al IV (a.f.u.) for the analyzed <span class="search-highlight">fluorophlogopite</span> ...

(a) Variation of Mg# and Al IV (a.f.u.) for the analyzed fluorophlogopite ...

Published: 01 January 2010
Fig. 5. (a) Variation of Mg# and Al IV (a.f.u.) for the analyzed fluorophlogopite crystals. (b) Sum of the cations occupying octahedral ( x axis) and tetrahedral ( y axis) positions in the analyzed fluorophlogopite crystals; (c) Classification of the analyzed fluorapatite crystals
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(a, b) <span class="search-highlight">Fluorophlogopite</span> crystals under optical microscope (plane pol. light...

(a, b) Fluorophlogopite crystals under optical microscope (plane pol. light...

Published: 01 January 2010
Fig. 2. (a, b) Fluorophlogopite crystals under optical microscope (plane pol. light). In (b), the crystal is surrounded by concretionary layers of a colourless amorphous phase. (c, d) Back-scattered electron (BSE) images of fluorophlogopite crystals grown on the walls of lava vesicles