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zircophyllite

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Journal Article

Redefinition of Zircophyllite, Ideally K 2 NaMn 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, a Kupletskite-group Mineral of the Astrophyllite Supergroup (in Accord with Ima 15-b) As an Astrophyllite-group Mineral, Ideally K 2 NaFe 2+ 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F (ima 17-d)

Elena Sokolova, Fernando CÁmara, Frank C. Hawthorne, Marco E. Ciriotti
Published: 30 January 2018
The Canadian Mineralogist (2018) 56 (1): 3–5.
DOI: https://doi.org/10.3749/canmin.1700062
...Elena Sokolova; Fernando CÁmara; Frank C. Hawthorne; Marco E. Ciriotti Abstract Zircophyllite is redefined as an astrophyllite-group mineral, ideally K 2 NaFe 2+ 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F (Fe 2+ -dominant at C 7 ) (IMA 17-D). Zircophyllite was previously considered to be a kupletskite...
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The Crystal Structure of Zircophyllite, K 2 NaFe 2+ 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, an Astrophyllite-supergroup Mineral from Mont Saint-hilaire, QuÉbec, Canada

Elena Sokolova, Frank C. Hawthorne
Published: 01 November 2016
The Canadian Mineralogist (2016) 54 (6): 1539–1547.
DOI: https://doi.org/10.3749/canmin.1600034
...Elena Sokolova; Frank C. Hawthorne Abstract Here we report the crystal structure of zircophyllite, ideally K 2 NaFe 2+ 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, from Mont Saint-Hilaire, Québec, Canada. This is the first determination of the crystal structure of zircophyllite, which was originally...
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Laverovite, K 2 NaMn 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, a New Astrophyllite-supergroup Mineral from Mont Saint-hilaire, QuÉbec, Canada

Elena Sokolova, Maxwell C. Day, Frank C. Hawthorne, Anatoly V. Kasatkin, Robert T. Downs, László Horváth, Elsa Pfenninger-Horváth
Published: 01 March 2019
The Canadian Mineralogist (2019) 57 (2): 201–213.
DOI: https://doi.org/10.3749/canmin.1800071
...-Hilaire, Québec, Canada. Associated minerals are zircophyllite, kupletskite, astrophyllite, aegirine, analcime, orthoclase, and albite. Laverovite is brown, transparent in thin grains, and has a vitreous luster. Mohs hardness is 3, D calc. = 3.367 g/cm 3 . Laverovite is biaxial (–) with refractive indices...
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Diagram depicting members of the astrophyllite group on the basis of the pr...

Published: 01 February 2003
F ig . 5c. Diagram depicting members of the astrophyllite group on the basis of the predominant cation at D. Kpt: kupletskite, Zrt: zircophyllite, Nbkpt: niobokupletskite, Fe–Zrt: Fe-dominant analogue of zircophyllite, Nbt: niobophyllite, Ast: astrophyllite.
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CHEMICAL COMPOSITION AND UNIT FORMULA FOR ZIRCOPHYLLITE (AFTER SOKOLOVA &am...

Published: 30 January 2018
TABLE 1. CHEMICAL COMPOSITION AND UNIT FORMULA FOR ZIRCOPHYLLITE (AFTER SOKOLOVA & HAWTHORNE 2016)
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CHEMICAL COMPOSITION AND UNIT FORMULA FOR ZIRCOPHYLLITE

Published: 01 November 2016
TABLE 2. CHEMICAL COMPOSITION AND UNIT FORMULA FOR ZIRCOPHYLLITE
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MISCELLANEOUS REFINEMENT DATA FOR ZIRCOPHYLLITE

Published: 01 November 2016
TABLE 3. MISCELLANEOUS REFINEMENT DATA FOR ZIRCOPHYLLITE
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ATOM COORDINATES AND DISPLACEMENT PARAMETERS (Å 2 ) FOR ZIRCOPHYLLITE

Published: 01 November 2016
TABLE 4. ATOM COORDINATES AND DISPLACEMENT PARAMETERS (Å 2 ) FOR ZIRCOPHYLLITE
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SELECTED INTERATOMIC DISTANCES (Å) AND ANGLES (°) FOR ZIRCOPHYLLITE

Published: 01 November 2016
TABLE 5. SELECTED INTERATOMIC DISTANCES (Å) AND ANGLES (°) FOR ZIRCOPHYLLITE
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HYDROGEN BONDING IN ZIRCOPHYLLITE

Published: 01 November 2016
TABLE 7. HYDROGEN BONDING IN ZIRCOPHYLLITE
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SELECTED BOND-VALENCE VALUES* FOR ZIRCOPHYLLITE

Published: 01 November 2016
TABLE 8. SELECTED BOND-VALENCE VALUES* FOR ZIRCOPHYLLITE
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The crystal structure of zircophyllite: (a) O and H sheets; (b) general vie...

Published: 01 November 2016
Fig. 1. The crystal structure of zircophyllite: (a) O and H sheets; (b) general view of the structure. The Fe 2+ -dominant and Zr-dominant octahedra are green and yellow, respectively; Si tetrahedra are orange; K and Na atoms at A and B sites are shown as large green and medium navy blue
Journal Article

The astrophyllite supergroup: nomenclature and classification

Elena Sokolova, Fernando Cámara, Frank C. Hawthorne, Marco E. Ciriotti
Published: 01 February 2017
Mineralogical Magazine (2017) 81 (1): 143–153.
DOI: https://doi.org/10.1180/minmag.2016.080.077
..., niobophyllite, zircophyllite, tarbagataite, nalivkinite and bulgakite. In the kupletskite group (HOH blocks connect via D– –D bridges, Mn 2+ is dominant at C 7 ), there are three minerals: kupletskite, niobokupletskite and kupletskite-(Cs). In the devitoite group (HOH blocks do not connect via D– –D bridges...
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REFINED SITE-SCATTERING VALUES AND ASSIGNED SITE-POPULATIONS FOR ZIRCOPHYLL...

Published: 01 November 2016
TABLE 6. REFINED SITE-SCATTERING VALUES AND ASSIGNED SITE-POPULATIONS FOR ZIRCOPHYLLITE
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Ti-Nb-Zr relationships in selected Fe-dominant members of the astrophyllite...

Published: 01 February 2007
F ig . 5. Ti-Nb-Zr relationships in selected Fe-dominant members of the astrophyllite group. ‘Fe-zircophyllite’ is a potentially new species ( Piilonen et al. , 2003 ), not yet IMA-approved; strictly, it should be referred to as the ‘Fe-dominant analogue of zircophyllite’, as in Table 1
Journal Article

THE CRYSTAL STRUCTURES OF NIOBOPHYLLITE, KUPLETSKITE-(Cs) AND Sn-RICH ASTROPHYLLITE: REVISIONS TO THE CRYSTAL CHEMISTRY OF THE ASTROPHYLLITE-GROUP MINERALS

Fernando Cámara, Elena Sokolova, Yassir Abdu, Frank C. Hawthorne
Published: 01 February 2010
The Canadian Mineralogist (2010) 48 (1): 1–16.
DOI: https://doi.org/10.3749/canmin.48.1.1
... unchanged from Piilonen et al . (2000) ], and zircophyllite, K 2 (Na,Ca) (Mn, Fe 2+ ) 7 (Zr,Nb) 2 Si 8 O 26 (OH) 4 F. Piilonen et al . (2003a) listed niobophyllite, kupletskite-(Cs) and zircophyllite as minerals lacking structure data. Recent work on the crystal chemistry of the astrophyllite...
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New minerals and nomenclature modifications approved in 2017

U. Hålenius, F. Hatert, M. Pasero, S. J. Mills
Published: 01 October 2017
Mineralogical Magazine (2017) 81 (5): 1279–1286.
DOI: https://doi.org/10.1180/minmag.2017.081.072
...: ericssonite, Ba Fe 3+ (Si 2 O 7 )O(OH), and ferroericssonite, Ba Fe 3+ (Si 2 O 7 )O(OH). IMA 17-D: Redefinition of zircophyllite Proposal 17-D is accepted, and zircophyllite is redefined as an astrophyllite-group mineral, ideally K 2 Na Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F (Fe 2+ -dominant at C7...
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INSIGHTS INTO ASTROPHYLLITE-GROUP MINERALS. I. NOMENCLATURE, COMPOSITION AND DEVELOPMENT OF A STANDARDIZED GENERAL FORMULA

Paula C. Piilonen, André E. Lalonde, Andrew M. McDonald, Robert A. Gault, Alf Olav Larsen
Published: 01 February 2003
The Canadian Mineralogist (2003) 41 (1): 1–26.
DOI: https://doi.org/10.2113/gscanmin.41.1.1
...F ig . 5c. Diagram depicting members of the astrophyllite group on the basis of the predominant cation at D. Kpt: kupletskite, Zrt: zircophyllite, Nbkpt: niobokupletskite, Fe–Zrt: Fe-dominant analogue of zircophyllite, Nbt: niobophyllite, Ast: astrophyllite. ...
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New minerals and nomenclature modifications approved in 2017

Ulf Hålenius, Frédéric Hatert, Marco Pasero, Stuart J. Mills
Published: 01 October 2017
European Journal of Mineralogy (2017) 29 (5): 931–936.
DOI: https://doi.org/10.1127/ejm/2017/0029-2698
... is accepted, and zircophyllite is redefined as an astrophyllite-group mineral, ideally K 2 NaF e 7 2 + Z r 2 ( S i 4 O 12 ) 2 O 2 ( OH ) 4 F (Fe 2+ -dominant at C7). In accord with proposal IMA 15-B, zircophyllite...
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Astrophyllite-group minerals from the Ilímaussaq complex, South Greenland (contribution to the mineralogy of Ilímaussaq no. 123)

R. Macdonald, S. Karup-Møller, J. Rose-Hansen
Published: 01 February 2007
Mineralogical Magazine (2007) 71 (1): 1–16.
DOI: https://doi.org/10.1180/minmag.2007.071.1.1
...F ig . 5. Ti-Nb-Zr relationships in selected Fe-dominant members of the astrophyllite group. ‘Fe-zircophyllite’ is a potentially new species ( Piilonen et al. , 2003 ), not yet IMA-approved; strictly, it should be referred to as the ‘Fe-dominant analogue of zircophyllite’, as in Table 1...
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