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Heyerdahlite, Na3Mn7Ti2(Si4O12)2O2(OH)4F(H2O)2, a new mineral of the astrophyllite supergroup from the Larvik Plutonic complex, Norway: Description and crystal structure

Published online by Cambridge University Press:  28 February 2018

Elena Sokolova ,
Maxwell C. Day ,
Frank C. Hawthorne  and
Roy Kristiansen
Elena Sokolova*
Affiliation:
Department of Geological Sciences, University of Manitoba, 125 Dysart Road, Winnipeg, MB, R3T 2N2Canada
Maxwell C. Day
Affiliation:
Department of Geological Sciences, University of Manitoba, 125 Dysart Road, Winnipeg, MB, R3T 2N2Canada
Frank C. Hawthorne
Affiliation:
Department of Geological Sciences, University of Manitoba, 125 Dysart Road, Winnipeg, MB, R3T 2N2Canada
Roy Kristiansen
Affiliation:
PO Box 32, N-1650, Sellebakk, Norway
*
*E-mail: elena.sokolova@umanitoba.ca
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Abstract

Heyerdahlite, ideally Na3Mn7Ti2(Si4O12)2O2(OH)4F(H2O)2, is a new astrophyllite-supergroup mineral from the Larvik Plutonic complex, Norway. Heyerdahlite was found in a nepheline-syenite pegmatite with albite, aegirine, hastingsite/magnesio-hastingsite, kupletskite, lorenzenite and pyrophanite. Heyerdahlite is colourless to pale brown, transparent and has a vitreous lustre. Mohs hardness is 3, Dcalc. = 3.245 g/cm3. Heyerdahlite is biaxial (+), α = 1.694(2), β = 1.710(5), γ = 1.730(5), 2Vmeas. = 80(4)° and 2Vcalc. = 84.5°. Cleavage is perfect parallel to {001}. The empirical formula based on 32.18 (O + F) apfu is (Na1.18K0.68Rb0.12Cs0.01Pb0.01)Σ2Na1.00(Mn6.29Zn0.23Mg0.07Zr0.04${\rm Fe}_{{\rm 0}{\rm. 03}}^{{\rm 2 +}} $Ca0.01Na0.34)Σ7.01(Ti1.78Nb0.17 Mg0.03Zr0.02)Σ2(Si8.03O24)O2[(OH)3.92F0.08]Σ4F1.00[(H2O)1.18□0.82]Σ2, for Z = 1. Heyerdahlite is triclinic, space group P$\bar 1$, a = 5.392(2), b = 11.968(4), c = 11.868(4) Å, α = 112.743(8), β = 94.816(7), γ = 103.037(8)° and V = 675.6(7) Å3. The crystal structure was refined to R1 = 4.44% for 3577 unique (Fo > 4σF) reflections. In the crystal structure of heyerdahlite, there are four [4]T sites occupied by Si. The [6]D site is occupied mainly by Ti. The T4O12 astrophyllite ribbons composed of SiO4 tetrahedra and D octahedra constitute the H (Heteropolyhedral) sheet. In the O (Octahedral) sheet, there are four Mn-dominant [6]M(1–4) sites. Two H sheets and one central O sheet form the HOH block, and adjacent HOH blocks link via a common ${\rm X}_{\rm D}^{\rm P} $ anion of the two D octahedra. In the I (Intermediate) block between HOH blocks, there are two interstitial cation sites, A and B, and a WA site, partly occupied by H2O. The A site splits into two sites, [12]A(1) and [6]A(2), partly occupied by K and Na, respectively, with A(1)–A(2) = 0.754 Å. The aggregate content of the A site is ideally Na2 apfu. The [10]B site is occupied by Na. The WA site is ideally occupied by (H2O)2 pfu. The mineral is named after the Norwegian explorer Thor Heyerdahl (1914–2002), who was born in Larvik.

Keywords

heyerdahlitenew mineralastrophyllite supergroupLarvik Plutonic complexelectron microprobe analysiscrystal structureFTIR spectroscopy
Type
Article
Information
Mineralogical Magazine , Volume 82 , Issue 2 , April 2018 , pp. 243 - 255
Copyright
Copyright © Mineralogical Society of Great Britain and Ireland 2018 

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Footnotes

Associate Editor: Ed Grew

References

Agakhanov, A.A., Pautov, L.A., Sokolova, E., Abdu, Y.A. and Karpenko, V.Yu. (2016) Two astrophyllite-supergroup minerals, bulgakite and nalivkinite: bulgakite, a new mineral from the Darai-Pioz alkaline massif, Tajikistan and revision of the crystal structure and chemical formula of nalivkinite. The Canadian Mineralogist, 54, 33–48.Google Scholar
Bartelmehs, K.L., Bloss, F.D., Downs, R.T. and Birch, J.B. (1992) EXCALIBR II. Zeitschrift für Kristallographie, 199, 185–196.Google Scholar
Brown, I.D. (1981) The bond valence method: an empirical approach to chemical structure and bonding. Pp. 1–30 in: Structure and Bonding in Crystals II (O'Keeffe, M. and Navrotsky, A., editors). Academic Press, New York, USA.Google Scholar
Cámara, F., Sokolova, E., Abdu, Y. and Hawthorne, F.C. (2010) The crystal structures of niobophyllite, kupletskite-(Cs) and Sn-rich astrophyllite; revisions to the crystal chemistry of the astrophyllite-group minerals. The Canadian Mineralogist, 48, 1–16.Google Scholar
Cámara, F., Sokolova, E., Abdu, Y.A. and Hawthorne, F.C. (2014) Nafertisite, Na3Fe2+10Ti2(Si6O17)2O2(OH)6F(H2O)2, from Mt. Kukisvumchorr, Khibiny alkaline massif, Kola peninsula, Russia: Refinement of the crystal structure and revision of the chemical formula. European Journal of Mineralogy, 26, 689–700.Google Scholar
Dahlgren, S. (2010) The Larvik plutonic complex: the larvikite and nepheline syenite plutons and their pegmatites. Pp. 26–37 in: The Langesundsfjord – History, Geology, Pegmatites, Minerals (Larsen, A.O., editor). Bode Verlag, Salzhemmendorf, Germany.Google Scholar
Kampf, A.R., Rossman, G.R., Steele, I.M., Pluth, J.J., Dunning, G.E. and Walstrom, R.E. (2010) Devitoite, a new heterophyllosilicate mineral with astrophyllite-like layers from eastern Fresno County, California. The Canadian Mineralogist, 48, 29–40.CrossRefGoogle Scholar
Khomyakov, A.P., Cámara, F., Sokolova, E., Hawthorne, F.C. and Abdu, Y. (2011) Sveinbergeite, Ca(Fe2+6Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4, a new astrophyllite-group mineral species from the Larvik plutonic complex, Oslo region, Norway: Description and crystal structure. Mineralogical Magazine, 75, 2687–2702.Google Scholar
Larsen, A.O. (2010) Renowned syenite pegmatite localities in the Larvik plutonic complex. Pp. 46–63 in: The Langesundsfjord – History, Geology, Pegmatites, Minerals (Larsen, A.O., editor). Bode Verlag, Salzhemmendorf, Germany.Google Scholar
Larsen, A.O. (2013) Contributions to the mineralogy of the syenite pegmatites in the Larvik plutonic complex. Norsk Bergverksmuseum, Skrift, 50, 101–109.Google Scholar
Oberti, R., Boiocchi, M., Hawthorne, F.C. and Kristiansen, R. (2014) Ferri-fluoro-leakite: a second occurrence at Bratthagen (Norway), with new data on Zn partitioning and the oxo component in Na amphiboles. Mineralogical Magazine, 78, 861–869.Google Scholar
Mandarino, J.A. (1981) The Gladstone-Dale relationship. IV. The compatibility concept and its application. The Canadian Mineralogist, 41, 989–1002.Google Scholar
Piilonen, P.C., Lalonde, A.E., McDonald, A.M. and Gault, R.A. (2000) Niobokupletskite, a new astrophyllite-group mineral from Mont Saint-Hilaire, Quebec, Canada: description and crystal structure. The Canadian Mineralogist, 38, 627–639.Google Scholar
Piilonen, P.C., McDonald, A.M. and Lalonde, A.E. (2001) Kupletskite polytypes from the Lovozero massif, Kola peninsula, Russia: kupletskite-1A and kupletskite-Ma2b2c. European Journal of Mineralogy, 13, 973–984.Google Scholar
Piilonen, P.C., Lalonde, A.E., McDonald, A.M., Gault, R.A. and Larsen, A.O. (2003) Insights into astrophyllite-group minerals. I. Nomenclature, composition and development of a standardized general formula. The Canadian Mineralogist, 41, 1–26.Google Scholar
Pouchou, J.L. and Pichoir, F. (1985) ‘PAP’ (φρZ) procedure for improved quantitative microanalysis. Pp. 104–106 in: Microbeam Analysis (Armstrong, J.T., editor). San Francisco Press, San Francisco, California, USA.Google Scholar
Sheldrick, G.M. (2004) CELL_NOW. University of Göttingen, Germany.Google Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112–122.Google Scholar
Sokolova, E. (2012) Further developments in the structure topology of the astrophyllite-group minerals. Mineralogical Magazine, 76, 863–882.Google Scholar
Sokolova, E. and Cámara, F. (2008) Re-investigation of the crystal structure of magnesium astrophyllite. European Journal of Mineralogy, 20, 253–260.CrossRefGoogle Scholar
Sokolova, E. and Hawthorne, F.C. (2016) The crystal structure of zircophyllite, K2Na${\rm Fe}_{\rm 7}^{{\rm 2 +}} $Zr2(Si4O12)2O2(OH)4F, an astrophyllite-supergroup mineral from Mont Saint-Hilaire, Québec, Canada. The Canadian Mineralogist, 54, 1539–1547.Google Scholar
Sokolova, E., Cámara, F., Hawthorne, F.C. and Ciriotti, M.E. (2017 a) The astrophyllite supergroup: nomenclature and classification. Mineralogical Magazine, 81, 143–153.Google Scholar
Sokolova, E., Cámara, F., Hawthorne, F.C., Semenov, E.I. and Ciriotti, M.E. (2017 b) Lobanovite, K2Na(${\rm Fe}_{\rm 4}^{{\rm 2 +}} $Mg2Na)Ti2(Si4O12)2O2(OH)4, a new mineral of the astrophyllite supergroup and its relation to magnesioastrophyllite. Mineralogical Magazine, 81, 175–181.Google Scholar
Stepanov, A.V., Bekenova, G.K., Levin, V.L., Sokolova, E.V., Hawthorne, F.C. and Dobrovolskaya, E.A. (2012) Tarbagataite, (K,□)2(Ca,Na)(Fe2+,Mn)7Ti2(Si4O12)2O2 (OH)4(OH,F), a new astrophyllite-group mineral species from the Verkhnee Espe deposit, Akjailyautas Mountains, Kazakhstan: description and crystal structure. The Canadian Mineralogist, 50, 159–168.Google Scholar
Wilson, A.J.C. (Editor) (1992) International Tables for Crystallography. Volume C: Mathematical, Physical and Chemical Tables. Kluwer Academic Publishers, Dordrecht, The Netherlands.Google Scholar
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