Hostname: page-component-848d4c4894-nr4z6 Total loading time: 0 Render date: 2024-05-06T01:31:04.127Z Has data issue: false hasContentIssue false
  • English
  • Français

Narsarsukite in peralkaline granites from the Papanduva Pluton, Graciosa Province, south Brazil: Insights from textural and compositional features

Published online by Cambridge University Press:  12 September 2023

Silvio R.F. Vlach Open the ORCID record for Silvio R.F. Vlach [Opens in a new window]  and
Frederico C.J. Vilalva Open the ORCID record for Frederico C.J. Vilalva [Opens in a new window]
Silvio R.F. Vlach*
Affiliation:
Department of Mineralogy and Geotectonics, University of São Paulo, São Paulo, SP, 05508-080, Brazil
Frederico C.J. Vilalva
Affiliation:
Department of Geology, Federal University of Rio Grande do Norte, Natal, RN, 59078-970, Brazil
*
Corresponding author: Silvio R.F. Vlach; Email: srfvlach@usp.br
Get access Rights & Permissions [Opens in a new window]

Abstract

We report textural and compositional data for the titanosilicate narsarsukite [Na2(Ti,Fe3+)Si4(O,F)11] in peralkaline granites from the Papanduva Pluton in Graciosa Province, south-southeastern Brazil. Two distinct narsarsukite generations, one late magmatic and the other post-magmatic, were identified on the basis of textural and compositional features. The magmatic generation consists of larger, euhedral to subhedral variably zoned crystals and late poikilitic intergrowths between narsarsukite and albite laths, representing the crystallisation of the latest melt pockets. The post-magmatic generation forms smaller, typically fibrous crystals and irregular aggregates that occur interstitially or replace the primary mafic minerals, particularly arfvedsonite. Compositions of narsarsukite from the Papanduva Pluton cover most of the compositional range described in known occurrences. The magmatic generation is enriched in Zr and depleted in Al. The Fe3+ and Al contents show a positive correlation for the magmatic crystals, but a negative correlation for the post-magmatic narsarsukite. The Al/Fe3+ ratios are higher in the post-magmatic crystals and can be used to discriminate between the two generations. The compositional variations are controlled mainly by the heterovalent substitution (Ti, Zr)4+ + O2– = (Al, Fe)3+ + F1–, and are compatible with (OH)1– ions in the O site. Narsarsukite has significantly higher concentrations of mid REE+Y and HFSE and very low to absent contents of LREE and LILE relative to the host-rocks. The average REE pattern of the magmatic crystals is highly fractionated, consistent with the expected strong preference for the smaller HREE. The post-magmatic crystals that replace arfvedsonite have flatter patterns, with higher concentrations of LREE and MREE. Their compositions suggest a fluid phase relatively rich in HFSE, REE, Y, Pb, Th and U. Narsarsukite is a common phase in strongly peralkaline granites such as the Papanduva Pluton and the well-known Strange Lake Complex, and should be considered a diagnostic mineral of highly peralkaline SiO2-oversaturated rocks containing rare Ti and Zr mineral assemblages.

Keywords

narsarsukitecompositionsREE patternsperalkaline granitesPapanduva PlutonGraciosa ProvinceBrazil
Type
Article
Information
Mineralogical Magazine , Volume 87 , Issue 6 , December 2023 , pp. 896 - 907
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of The Mineralogical Society of the United Kingdom and Ireland

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Associate Editor: Edward Sturgis Grew

References

Andersen, T., Erambert, M., Larsen, A.O. and Selbekk, R.S. (2010) Petrology of nepheline syenite pegmatites in the Oslo Rift, Norway: Zirconium silicate mineral assemblages as indicators of alkalinity and volatile fugacity in mildly agpaitic magma. Journal of Petrology, 51, 2303–2325.CrossRefGoogle Scholar
Andrade, S. (2016) Análises por LA-ICPMS em zircões de rochas graníticas da Faixa Ribeira no Estado de São Paulo—SE Brasil: Implicações genéticas e geocronológicas. Doctoral Thesis, University of São Paulo, São Paulo, Brazil, 361 pp. [in Portuguese].Google Scholar
Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nicchols, M.C. (editors) (2003) Handbook of Mineralogy. Mineralogical Society of America, Chantilly, Virginia, USA.Google Scholar
Balmer, M.L., Bunker, B.C., Wang, L.Q., Peden, C.H.F. and Su, Y. (1997) Solid-state 29Si MAS NMR study of titanosilicates. The Journal of Physical Chemistry B, 101, 9170–9179.CrossRefGoogle Scholar
Bastin, G.F. and Heijligers, H.J.M. (1990) Progress in electron-probe microanalysis. Materialwissenschaft und Werkstofftechnik, 21, 90–92.CrossRefGoogle Scholar
Bennet, J.N., Turner, E.C., Ike, C. and Bowden, P. (1984) The geology of some northern Nigerian anorogenic ring complexes. Overseas Geology and Mineral Resources, 61, 1–65.Google Scholar
Birkett, T., Trzcienski, W.E. Jr and Stirling, J.A.R. (1996) Occurrence and composition of some Ti-bearing minerals in the Strange Lake Intrusive Complex, Quebec-Labrador Boundary. The Canadian Mineralogist, 34, 779–801.Google Scholar
Boynton, W.V. (1984) Cosmochemistry of the rare earth elements: meteorite studies. Pp. 63–114 in Rare Earth Element Geochemistry (Henderson, P., editor). Elsevier, Amsterdam.CrossRefGoogle Scholar
Day, M. and Hawthorne, F. (2020) A structure hierarchy for silicate minerals: Chain, ribbon, and tube silicates. Mineralogical Magazine, 84, 165–244.CrossRefGoogle Scholar
Flink, G. (1901) Undersögelser af minerallen fra Julianehaab, Pt. 1, On the minerals from Narsarsuk on the Firth of Tunugdlliarfik in Southern Greenland. Meddeleser om Grönland, 24, 9–180.Google Scholar
Gerasimovsky, V.I., Volkov, V.P, Kogarko, L.N. and Polyakov, A.l. (1974) Kola Peninsula. Pp. 206–220 in The Alkaline Rocks (Sørensen, H., editor). Wiley, New York.Google Scholar
Graham, W.A.P. (1935) An occurrence of narsarsukite in Montana. American Mineralogist, 20, 598–601.Google Scholar
Griffin, W.L., Powell, W.J., Pearson, N.J. and O'Reilly, S.Y. (2008) GLITTER: data reduction software for laser ablation ICP–MS. Pp. 204–207 in: Laser Ablation ICP–MS in the Earth Sciences (Sylvester, P., editor). Mineralogical Association of Canada Short Course Series Volume 40.Google Scholar
Gualda, G.A.R. and Vlach, S.R.F. (2007) The Serra da Graciosa A-type granites and syenites, southern Brazil. Part 1: Regional setting and geological characterization. Anais da Academia Brasileira de Ciências, 79, 405–430.CrossRefGoogle Scholar
Hoskin, P.W.O. (2005) Trace-element composition of hydrothermal zircon and the alteration of Hadean zircon from the Jack Hills, Australia. Geochimica et Cosmochimica Acta, 69, 637–648.CrossRefGoogle Scholar
Jérémine, E. and Christophe Michel-Lévy, M. (1961) Un noveau gisement de narsarsukite. Bulletin de la Société Française de Minéralogie et Christallographie, 84, 191–194.CrossRefGoogle Scholar
Le Maitre, R.W. (ed) (1989) A Classification of Igneous Rocks and Glossary of Terms. Blackwell Scientific Publications, Oxford, 193 pp.Google Scholar
Marks, M.A.W., Hettmann, K., Schilling, J., Frost, B.R. and Markl, G. (2011) The mineralogical diversity of alkaline igneous rocks: Critical factors for the transition from miaskitic to agpaitic phase assemblages. Journal of Petrology, 52, 439–455.CrossRefGoogle Scholar
Nicholls, J. and Carmichael, I.S.E. (1969) Peralkaline acid liquids: a petrological study. Contributions to Mineralogy and Petrology, 20, 268–294.CrossRefGoogle Scholar
Peacor, D.R. and Buerger, M.J. (1962) The determination and refinement of the structure of narsarsukite, Na2TiOSi4O10. American Mineralogist, 47, 539–556.Google Scholar
Pyatenko, Y.A. and Pudovkina, Z.V. (1960) Crystal structure of narsarsukite. Soviet Physics Crystallography, 5, 540–548.Google Scholar
Rainho, J.P., Lin, Z., Rocha, J. and Carlos, L.D. (2003) Synthesis and luminescence of Eu3+-doped narsarsukite prepared by the sol-gel process. Journal of Sol-Gel Science and Technology, 36, 1005–1009.CrossRefGoogle Scholar
Read, A.J. (1991) Narsarsukite from Mayor Island, New Zealand. Journal of Geology and Geophysics, 34, 337–340.CrossRefGoogle Scholar
Schingaro, E., Mesto, E., Lacalamita, M., Scordari, F., Kaneva, E. and Vladykin, F.N. (2017) Single-crystal X-ray diffraction, EMPA, FTIR and X-ray photoelectron spectroscopy study of narsarsukite from Murun Massif, Russia. Mineralogical Magazine, 81, 339–354.CrossRefGoogle Scholar
Shannon, R.D. (1976) Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica, A32, 751–767.CrossRefGoogle Scholar
Siachoque, A., Vilalva, F.C.J. and Vlach, S.R.F. (2022) Astrophyllite in peralkaline granites from the Graciosa Province (S-SE Brazil): Insights from magmatic vs post magmatic crystallization environments. Lithos, 432–433, 106892. https://doi.org/10.1016/j.lithos.2022.106892.CrossRefGoogle Scholar
Sørensen, H. (1960) On the agpaitic rocks. Pp. 319–327 in Report of the International Geological Congress Twenty First Session, Norden, Copenhagen, Denmark, Volume 13: Petrographic Provinces, Igneous and Metamorphic Rocks.Google Scholar
Ulbrich, H.H. and Ulbrich, M.N.C. (2000) The lujavrite and khibinite bodies in the Poços de Caldas Alkaline Massif, Southeastern Brazil: a structural and petrographic study. Revista Brasileira de Geociências, 30, 615–622.CrossRefGoogle Scholar
Upton, B.G.J., Macdonald, R., Hill, P.G., Jefferies, B. and Ford, S.E. (1976) Narsarsukite: a new occurrence in peralkaline trachyte, South Greenland. Mineralogical Magazine, 40, 737–746.CrossRefGoogle Scholar
Ussing, N.V. (1912) Geology of the country around Julianehaab, Greenland. Meddelelser om Grønland, 38, 1–376.Google Scholar
Vasyukova, O.V. and Williams-Jones, A.E. (2019) Closed system fluid-mineral-mediated trace element behaviour in peralkaline rare metal pegmatites: evidence from Strange Lake. Chemical Geology, 505, 86–99.CrossRefGoogle Scholar
Vilalva, F.C.J. (2007) Petrografia e mineralogia de granitos peralkalinos: O Pluton Papanduva, Complexo Morro Redondo (PR/SC). Master's Dissertation, University of São Paulo, São Paulo, Brazil [in Portuguese].Google Scholar
Vilalva, F.C.J. and Vlach, S.R.F. (2010) Major- and trace-element composition of REE-rich turkestanite from peralkaline granites of the Morro Redondo Complex, Graciosa Province, south Brazil. Mineralogical Magazine, 74, 645–658.CrossRefGoogle Scholar
Vilalva, F.C.J. and Vlach, S.R.F. (2014) Geology, petrography and geochemistry of the A-type granites from the Morro Redondo Complex (PR–SC), southern Brazil, Graciosa Province. Anais da Academia Brasileira de Ciências, 86, 85–116.CrossRefGoogle Scholar
Vilalva, F.C.J., Vlach, S.R.F. and Simonetti, A. (2013) Nacareniobsite-(Ce) and britholite-(Ce) in peralkaline granites from the Morro Redondo Complex, Graciosa Province, southern Brazil: occurrence and compositional data. The Canadian Mineralogist, 51, 313–332.CrossRefGoogle Scholar
Vilalva, F.C.J., Vlach, S.R.F. and Simonetti, A. (2016) Chemical and O-isotope compositions of amphiboles and clinopyroxenes from A-type granites of the Papanduva Pluton, South Brazil: Insights into late- to post-magmatic evolution of peralkaline systems. Chemical Geology, 420, 186–199.CrossRefGoogle Scholar
Vilalva, F.C.J., Simonetti, A. and Vlach, S.R.F. (2019) Insights on the origin of the Graciosa A-type granites and syenites (Southern Brazil) from zircon U–Pb geochronology, chemistry, and Hf and O isotope compositions. Lithos, 340–341, 20–33.CrossRefGoogle Scholar
Vlach, S.R.F. (2022) On the morphology and geochemistry of hydrothermal crypto- and microcrystalline zircon aggregates in a peralkaline granite. Minerals, 12, 628. https://doi.org/10.3390/min12050628.CrossRefGoogle Scholar
Vlach, S.R. and Gualda, G.A. (2007) Allanite and chevkinite in A-type granites and syenites of the Graciosa Province, southern Brazil. Lithos, 97, 98–121.CrossRefGoogle Scholar
Vlach, S.R.F., Siga, O., Harara, O.M.M., Gualda, G. A.R., Basei, M.A.S and Vilalva, F.C.J. (2011) Crystallization ages of the A-type magmatism of the Graciosa Province (Southern Brazil): Constraints from zircon U–Pb (ID–TIMS) dating of coeval K-rich gabbro–dioritic rocks. Journal of South American Earth Sciences, 32, 407–415.CrossRefGoogle Scholar
Wagner, C., Parodi, G.C., Semet, M., Robert, J.L. Berrahma, M. and Velde, D. (1991) Crystal chemistry of narsarsukite. European Journal of Mineralogy, 3, 575–585.CrossRefGoogle Scholar
Warr, L.N. (2021) IMA-CNMNC approved mineral symbols. Mineralogical Magazine, 85, 291–320.CrossRefGoogle Scholar
Supplementary material: File

Vlach and Vilalva supplementary material 1

Vlach and Vilalva supplementary material
Download Vlach and Vilalva supplementary material 1(File)
File 34.8 KB
Supplementary material: File

Vlach and Vilalva supplementary material 2

Vlach and Vilalva supplementary material
Download Vlach and Vilalva supplementary material 2(File)
File 64.2 KB
Supplementary material: File

Vlach and Vilalva supplementary material 3

Vlach and Vilalva supplementary material
Download Vlach and Vilalva supplementary material 3(File)
File 45.3 KB
Supplementary material: File

Vlach and Vilalva supplementary material 4

Vlach and Vilalva supplementary material
Download Vlach and Vilalva supplementary material 4(File)
File 14.2 KB