TY - JOUR

T1 - Enricofrancoite, KNaCaSi4O10, a new Ca-K-Na silicate from Somma-Vesuvius volcano, southern Italy

AU - Balassone, G.

AU - Panikorovskii, T.L.

AU - Pellino, A.

AU - Bazai, A.V.

AU - Bocharov, V.N.

AU - Goychuk, O.F.

AU - Avdontseva, E.Y.

AU - Yakovenchuk, V.N.

AU - Krivovichev, S.V.

AU - Petti, C.

AU - Cappelletti, P.

AU - Mondillo, N.

AU - Moliterni, A.

AU - Altomare, A.

AU - Izzo, F.

N1 - Export Date: 11 March 2024 Адрес для корреспонденции: Panikorovskii, T.L.; Kola Science Centre, 14 Fersman Street, Russian Federation; эл. почта: t.panikorovskii@ksc.ru Пристатейные ссылки: (2014) CrysAlis CCD and CrysAlis RED, , Agilent Technologies Oxford Diffraction Ltd, Yarnton, Oxfordshire; Aksenov, S.M., Rastsvetaeva, R.K., Chukanov, N.V., Kolitsch, U., Structure of calcinaksite KNa[Ca(H2O)][Si4Ol0], the first hydrous member of the litidionite group of silicates with [Si8O20]8− tubes (2014) Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 70, pp. 768-775; Armbruster, T., Gnos, E., Dixon, R., Gutzmer, J., Hejny, C., Döbelin, N., Medenbach, O., Manganvesuvianite and tweddillite, two new Mn3+-silicate minerals from the Kalahari manganese fields, South Africa (2002) Mineralogical Magazine, 66, pp. 121-135; Balassone, G., Talla, D., Beran, A., Mormone, A., Altomare, A., Moliterni, A., Mondillo, N., Petti, C., Vesuvianite from Somma-Vesuvius volcano (southern Italy): Chemical, X-ray diffraction and single-crystal polarized FTIR investigations (2011) Periodico di Mineralogia, 80, pp. 369-384; Balassone, G., Petti, C., Mondillo, N., Panikorovskii, T.L., de Gennaro, R., Cappelletti, P., Altomare, A., D’Orazio, L., Copper Minerals at Vesuvius Volcano (Southern Italy): A Mineralogical Review (2019) Minerals, 9, p. 730; Balassone, G., Panikorovskii, T.L., Pellino, A., Bazai, A.V., Bocharov, V.N., Krivovichev, S.V., Petti, C., Mondillo, N., The complex mechanism of Ti4+ incorporation into litidionite from the Somma–Vesuvius volcano, Italy (2022) Mineralogical Magazine, 86, pp. 222-233; Balassone, P., Panikorovskii, T.L., Pellino, A., Bazai, A.V., Bocharov, V.N., Goychuk, O.F., Avdontseva, E.Y., Altomare, A., Enricofrancoite, IMA 2023-002. CNMNC Newsletter 74 (2023) Eur. J. Mineral, 35, pp. 659-664; Baur, W.H., The geometry of polyhedral distortions. Predictive relationships for the phosphate group (1974) Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 30, pp. 1195-1215; Brandão, P., Rocha, J., Reis, M.S., dos Santos, A.M., Jin, R., Magnetic properties of compounds (2009) Journal of Solid State Chemistry, 182, pp. 253-258; Brese, N.E., O’Keefe, M., Bond-valence parameters for solids (1991) Acta Crystallographica, B47, pp. 192-197; Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Blass, G., Varlamov, D.A., Pekov, I.V., Belakovskiy, D.I., Gurzhiy, V.V., Calcinaksite, KNaCa(Si4O10) H2O, a new mineral from the Eifel volcanic area, Germany (2015) Mineralogy and Petrology, 109, pp. 397-404; Day, M.C., Hawthorne, F.C., A structure hierarchy for silicate minerals: chain, ribbon, and tube silicates (2020) Mineralogical Magazine, 84, pp. 165-244; Dolivo-Dobrovolsky, D.D., (2016) MINAL, free software, , http://www.dimadd.ru, Saint-Petersburg. < >; Dolomanov, O.V., Bourhis, L.J., Gildea, R.J., Howard, J.A.K., Puschmann, H., OLEX2: a complete structure solution, refinement and analysis program (2009) Journal of Applied Crystallography, 42, pp. 339-341; Durand, G., Vilminot, S., Richard-Plouet, M., Derory, A., Lambour, J.P., Drillon, M., Magnetic Behavior of Na2MSi4O10 (M=Co, Ni) Compounds (1997) Journal of Solid State Chemistry, 131, pp. 335-340; Franco, E., de Gennaro, M., Panunzite; a new mineral from Mt. Somma-Vesuvio, Italy (1988) American Mineralogist, 73, pp. 420-421; Galuskin, E.V., Lazic, B., Armbruster, T., Galuskina, I.O., Pertsev, N.N., Gazeev, V.M., Wlodyka, R., Dubrovinsky, L.S., Edgrewite Ca9(SiO4)4F2-hydroxyledgrewite Ca9(SiO4)4(OH)2, a new series of calcium humite-group minerals from altered xenoliths in the ignimbrite of Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia (2012) American Mineralogist, 97, pp. 1998-2006; de Gennaro, M., Franco, E., La K-Cabasite di alcuni «tufi del Vesuvio (1974) Atti della Accademia Nazionale dei Lincei, 60, pp. 490-497; Golovachev, V.P., Drozdov, Y.N., Kuz’min, E.A., Belov, N.V., The crystal structure of fenaksite, NaKFeSi4O10 (1970) Doklady Akademii Nauk SSSR, 194, pp. 818-820. , Russian; Groat, L.A., Hawthorne, F.C., Ercit, T.S., The chemistry of Vesuvianite (1992) The Canadian Mineralogist, 30, pp. 19-48; Hawthorne, F.C., Ferguson, R.B., Refinement of the crystal structure of kröhnkite (1975) Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 31, pp. 1753-1755; Holland, T.J.B., Redfern, S.A.T., Unit cell refinement from powder diffraction data: the use of regression diagnostics (1997) Mineralogical Magazine, 61, pp. 65-77; Karimova, O., Burns, P.C., Silicate Tubes in the Crystal Structure of Manaksite (2008) Minerals as Advanced Materials I, pp. 153-156. , Springer Berlin Heidelberg, Berlin, Heidelberg; Katz, A.K., Glusker, J.P., Beebe, S.A., Bock, C.W., Calcium Ion Coordination: A Comparison with That of Beryllium, Magnesium, and Zinc (1996) Journal of the American Chemical Society, 118, pp. 5752-5763; Khomyakov, A.P., Kurova, T.A., Nechelyustov, G.N., Manaksite NaKMnSi4O10: a new mineral (1992) Zapiski RMO, 121, pp. 112-114; Kornev, A.N., Maksimov, B.A., Lider, V.V., Ilyukhin, V.V., Belov, N.V., Crystal structure of Na2CuSi4O10 (1972) Soviet Physics Doklady, 17, pp. 735-737; Lafuente, B., Downs, R.T., Yang, H., Stone, N., The power of databases: the RRUFF project (2015) Highlights in Mineralogical Crystallography, pp. 1-30; Liebau, F., (1985) Structural Chemistry of Silicates, , Springer Berlin Heidelberg, Berlin, Heidelberg; McCusker, L.B., Liebau, F., Engelhardt, G., Nomenclature of structural and compositional characteristics of ordered microporous and mesoporous materials with inorganic hosts (2003) Microporous and Mesoporous Materials, 58, pp. 3-13; Merlino, S., Franco, E., Mattia, C.A., Pasero, M., De Gennaro, M., The crystal structure of panunzite (natural tetrakalsilite) (1985) Neues Jahrbuch Fur Mineralogie Monatshefte, 7, pp. 322-328; Momma, K., Izumi, F., VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data (2011) Journal of Applied Crystallography, 44, pp. 1272-1276; Ohkawa, M., Yoshiasa, A., Takeno, S., Crystal chemistry of vesuvianite: site preferences of square- pyramidal coordinated sites (1992) American Mineralogist, 77, pp. 945-953; Pakhomovsky, Y.A., Panikorovskii, T.L., Yakovenchuk, V.N., Ivanyuk, G.Yu., Mikhailova, J.A., Krivovichev, S.V., Bocharov, V.N., Kalashnikov, A.O., Selivanovaite, NaTi3(Ti,Na,Fe,Mn)4[(Si2O7)2O4(OH,H2O)4]·nH2O, a new rock-forming mineral from the eudialyte-rich malignite of the Lovozero alkaline massif (Kola Peninsula, Russia) (2018) European Journal of Mineralogy, 30, pp. 525-535; Panikorovskii, T.L., Chukanov, N.V., Aksenov, S.M., Mazur, A.S., Avdontseva, E.Yu., Shilovskikh, V.V., Krivovichev, S.V., Alumovesuvianite, Ca19Al(Al,Mg)12Si18O69(OH)9, a new vesuvianite-group member from the Jeffrey mine, asbestos, Estrie region, Québec, Canada (2017) Mineralogy and Petrology, 111, pp. 833-842. , Mineralogy and Petrology; Panikorovskii, T.L., Shilovskikh, V.V., Avdontseva, E.Yu., Zolotarev, A.A., Pekov, I.V., Britvin, S.N., Hålenius, U., Krivovichev, S.V., Cyprine, Ca19Cu2+(Al,Mg,Mn)12Si18O69(OH)9, a new vesuvianite-group mineral from the Wessels mine, South Africa (2017) European Journal of Mineralogy, 29, pp. 295-306; Panikorovskii, T.L., Shilovskikh, V.V., Avdontseva, E.Yu., Zolotarev, A.A., Karpenko, V.Yu., Mazur, A.S., Yakovenchuk, V.N., Pekov, I.V., Magnesiovesuvianite, Ca19Mg(Al,Mg)12Si18O69(OH)9, a new vesuvianite-group mineral (2017) Journal of Geosciences (Czech Republic), 62, pp. 25-36; Panikorovskii, T.L., Chukanov, N.V., Rusakov, V.S., Shilovskikh, V.V., Mazur, A.S., Balassone, G., Ivanyuk, G.Yu., Krivovichev, S.V., Vesuvianite from the Somma-Vesuvius Complex: New Data and Revised Formula (2017) Minerals, 7, p. 248; Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Lykova, I.S., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Yu., Sanguite, KCuCl3, A New Mineral From the Tolbachik Volcano, Kamchatka, Russia (2015) The Canadian Mineralogist, 53, pp. 633-641; Pozas, J.M., Rossi, G., Tazzoli, V., Re-examination and Crystal Structure Analysis of Litidionite (1975) American Mineralogist, 60, pp. 471-474; Rainho, J.P., Carlos, L.D., Rocha, J., New phosphors based on Eu3+-doped microporous titanosilicates (2000) Journal of Luminescence, 87-89, pp. 1083-1086; Rozhdestvenskaya, I.V., Bannova, I.I., Nikishova, L.V., Soboleva, T.V., The crystal structure of fenaksite K2Na2Fe2Si8O20 (2004) Dokladyof the Russian Academy of Sciences, 398, pp. 1029-1033; Scacchi, E., Lapilli azzurri del Vesuvio (1880) Rendiconto dell’Accademia delle Scienze Fisiche e Matematiche, 19, pp. 175-179; Sheldrick, G.M., Crystal structure refinement with SHELXL (2015) Acta Crystallographica Section C Structural Chemistry, 71, pp. 3-8; Siidra, O.I., Lukina, E.A., Nazarchuk, E.V., Depmeier, W., Bubnova, R.S., Agakhanov, A.A., Avdontseva, E.Yu., Kovrugin, V.M., Saranchinaite, Na2Cu(SO4)2, a new exhalative mineral from Tolbachik volcano, Kamchatka, Russia, and a product of the reversible dehydration of kröhnkite, Na2Cu(SO4)2(H2O)2 (2018) Mineralogical Magazine, 82, pp. 257-274; Yakovenchuk, V., Pakhomovsky, Y., Panikorovskii, T., Zolotarev, A., Mikhailova, J., Bocharov, V., Krivovichev, S., Ivanyuk, G., Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3-(Si2O7)4(OH,O,F)12, a New Mineral with a Modular Wallpaper Structure, from the Khibiny Alkaline Massif (Kola Peninsula, Russia) (2019) Minerals, 9, p. 219

PY - 2024/6/26

Y1 - 2024/6/26

N2 - Enricofrancoite (IMA 2023-002), ideally KNaCaSi4O10, is a new litidionite-group member found as the product of high-temperature alteration of hosting silicates with the enrichment by Cu-bearing fluids at the rock-fumaroles interface related to the 1872 eruption of Somma-Vesuvius volcano, southern Italy. It occurs as euhedral and platy crystals or crusts together with litidionite, tridymite, wollastonite and Al- and Fe-bearing diopside, kamenevite, perovskite, rutile, Ti-rich magnetite and colorless Si-glass. Single crystals of enricofrancoite are transparent colorless or light blue with a vitreous lustre. Mohs hardness is 5.5. Dmeas is 2.63(3) g/cm3 and Dcalc is 2.63 g/cm3. The mineral is optically biaxial (-), α = 1.542(5), β = 1.567(5),γ = 1.575(5); 2V(meas) = 60(2)° and 2Vcalc = 58°. The mean chemical composition (wt.%, electron-microprobe data) is: SiO2 64.81, Al2O3 0.03, TiO2 0.08, FeO 0.07, MgO 1.71, CaO 10.64, CuO 2.22, Na2O 8.56, K2O 11.41, total 99.94. The empirical formula based on 10 O apfu is: K0.90Na1.03(Ca0.71Mg0.16Cu0.10)Σ=0.97Si4.02O10. The Raman spectrum contains bands at 133, 248, 265, 290, 335, 400, 438, 510, 600, 690, 1120 cm-1 and the wavenumbers of the IR absorption bands are: 424, 470, 492, 530, 600, 630, 690, 750, 788, 970, 1040, 1160 cm-1. The eight strongest lines of the powder X-ray diffraction pattern are (I-d(A)-hkl): 42-6.75-01-1, 20-3.65-11-2, 100-3.370-02-2, 52-3.210-102, 18-3.051-111, 25-3.033-2-1-2, 22-2.834-02-3, 72-2.411-03-2. Enricofrancoite is triclinic, space group P-1, unit-cell parameters refined from the single-crystal data are a = 7.0155(4) Å, b = 8.0721(4) Å, c = 10.0275(4) Å, α = 104.420(4)°, β = 99.764(4)°, γ = 115.126(5),° V = 472.74(5) Å3. The crystal structure has been refined from single-crystal X-ray diffraction data to R1 = 0.035 on the basis of 2078 independent reflections with Fo > 4σ(Fo). Enricofrancoite is an H2O-free analogue of calcinaksite with 5-coordinated Ca2+ at the M site. © 2024 Cambridge University Press. All rights reserved.

AB - Enricofrancoite (IMA 2023-002), ideally KNaCaSi4O10, is a new litidionite-group member found as the product of high-temperature alteration of hosting silicates with the enrichment by Cu-bearing fluids at the rock-fumaroles interface related to the 1872 eruption of Somma-Vesuvius volcano, southern Italy. It occurs as euhedral and platy crystals or crusts together with litidionite, tridymite, wollastonite and Al- and Fe-bearing diopside, kamenevite, perovskite, rutile, Ti-rich magnetite and colorless Si-glass. Single crystals of enricofrancoite are transparent colorless or light blue with a vitreous lustre. Mohs hardness is 5.5. Dmeas is 2.63(3) g/cm3 and Dcalc is 2.63 g/cm3. The mineral is optically biaxial (-), α = 1.542(5), β = 1.567(5),γ = 1.575(5); 2V(meas) = 60(2)° and 2Vcalc = 58°. The mean chemical composition (wt.%, electron-microprobe data) is: SiO2 64.81, Al2O3 0.03, TiO2 0.08, FeO 0.07, MgO 1.71, CaO 10.64, CuO 2.22, Na2O 8.56, K2O 11.41, total 99.94. The empirical formula based on 10 O apfu is: K0.90Na1.03(Ca0.71Mg0.16Cu0.10)Σ=0.97Si4.02O10. The Raman spectrum contains bands at 133, 248, 265, 290, 335, 400, 438, 510, 600, 690, 1120 cm-1 and the wavenumbers of the IR absorption bands are: 424, 470, 492, 530, 600, 630, 690, 750, 788, 970, 1040, 1160 cm-1. The eight strongest lines of the powder X-ray diffraction pattern are (I-d(A)-hkl): 42-6.75-01-1, 20-3.65-11-2, 100-3.370-02-2, 52-3.210-102, 18-3.051-111, 25-3.033-2-1-2, 22-2.834-02-3, 72-2.411-03-2. Enricofrancoite is triclinic, space group P-1, unit-cell parameters refined from the single-crystal data are a = 7.0155(4) Å, b = 8.0721(4) Å, c = 10.0275(4) Å, α = 104.420(4)°, β = 99.764(4)°, γ = 115.126(5),° V = 472.74(5) Å3. The crystal structure has been refined from single-crystal X-ray diffraction data to R1 = 0.035 on the basis of 2078 independent reflections with Fo > 4σ(Fo). Enricofrancoite is an H2O-free analogue of calcinaksite with 5-coordinated Ca2+ at the M site. © 2024 Cambridge University Press. All rights reserved.

KW - crystal structure

KW - enricofrancoite

KW - Italy

KW - litidionite group

KW - new mineral

KW - Somma-Vesuvius

KW - Absorption spectroscopy

KW - Alumina

KW - Aluminum oxide

KW - Copper oxides

KW - Feldspar

KW - Magnesia

KW - Magnetite

KW - Perovskite

KW - Potassium compounds

KW - Silica

KW - Silicon

KW - Single crystals

KW - Sodium compounds

KW - Ternary alloys

KW - Titanium dioxide

KW - Volcanoes

KW - Crystals structures

KW - Cu bearings

KW - Enricofrancoite

KW - Group members

KW - Highest temperature

KW - Litidionite group

KW - New mineral

KW - Southern Italy

KW - Crystal structure

UR - https://www.mendeley.com/catalogue/67452c80-55fb-31bc-acc7-0abdd0ef02f8/

U2 - 10.1180/mgm.2024.9

DO - 10.1180/mgm.2024.9

M3 - статья

VL - 88

SP - 277

EP - 287

JO - Mineralogical Magazine

JF - Mineralogical Magazine

SN - 0026-461X

IS - 3

ER -