Nioboixiolite-(Mn 2+ ),     \(\left( {{\mathbf{N}}{{{\mathbf{b}}}_{{{2 \mathord{\left/ {\vphantom {2 3}} \right. } 3}}}}{\mathbf{Mn}}_{{{1 \mathord{\left/ {\vphantom {1 3}} \right. } 3}}}^{{{\mathbf{2}} + }}} \right){{{\mathbf{O}}}_{{\mathbf{2}}}},\)   a New Ixiolite-Group Mineral from the Malkhan Pegmatite Field, Transbaikal Region, Russia

N. V. Chukanov; Чуканов Д. чл. Н. В.; I. V. Pekov; Пеков И. В.; N. V. Zubkova; Зубкова Н. В.; V. O. Yapaskurt; Япаскурт В. О.; Yu. S. Shelukhina; Шелухина Ю. С.; S. N. Britvin; Бритвин С. Н.; D. Yu. Pushcharovsky; Пущаровский Д. Ю.

doi:10.31857/S0869605523010033

Nioboixiolite-(Mn²⁺), \(\left( {{\mathbf{N}}{{{\mathbf{b}}}_{{{2 \mathord{\left/ {\vphantom {2 3}} \right. } 3}}}}{\mathbf{Mn}}_{{{1 \mathord{\left/ {\vphantom {1 3}} \right. } 3}}}^{{{\mathbf{2}} + }}} \right){{{\mathbf{O}}}_{{\mathbf{2}}}},\) a New Ixiolite-Group Mineral from the Malkhan Pegmatite Field, Transbaikal Region, Russia

Authors: Chukanov N.V.¹^,2, Pekov I.V.², Zubkova N.V.², Yapaskurt V.O.², Shelukhina Y.S.³, Britvin S.N.³, Pushcharovsky D.Y.²
Affiliations:
1. Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS
2. Faculty of Geology, Moscow State University
3. Institute of Earth Sciences, Saint Petersburg State University
Issue: Vol CLII, No 1 (2023)
Pages: 8-17
Section: NEW MINERALS
URL: https://journal-vniispk.ru/0869-6055/article/view/136723
DOI: https://doi.org/10.31857/S0869605523010033
EDN: https://elibrary.ru/NFRPRT
ID: 136723

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Abstract

The new ixiolte-group mineral nioboixiolite-(Mn²⁺), ideally \( \left( {{\text{N}}{{{\text{b}}}_{{{2 \mathord{\left/
{\vphantom {2 3}} \right.
} 3}}}}{\text{Mn}}_{{{1 \mathord{\left/
{\vphantom {1 3}} \right.
} 3}}}^{{2 + }}} \right){{{\text{O}}}_{{\text{2}}}}{\text{,}} \) the niobian analogue of ixiolite-(Mn²⁺), was discovered in the Sosedka granitic pegmatite vein, Malkhan pegmatite field, Zabaikalsky Krai (Transbaikal Region), Siberia, Russia. The associated minerals are albite, quartz, microcline, elbaite, beryl, bismuthinite, euxenite-(Y), zircon, rutile, cassiterite, and cannonite. Nioboixiolite-(Mn²⁺) occurs as clusters of dark brown to brown-black prismatic crystals up to 0.8 × 1.5 × 5 mm embedded in albite. The lustre is submetallic to adamantine, and the streak is brown. Cleavage is not observed. The Mohs’ hardness is 4.5–5. Density calculated using the empirical formula is equal to 5.803 g cm^–3. The IR spectrum and reflectance spectra in visible range are given. The chemical composition of nioboixiolite-(Mn²⁺) is (electron microprobe, wt %): MnO 14.94, Sc₂O₃ 1.80, Fe₂O₃ 0.20, Y₂O₃ 1.34, TiO₂ 7.66, ZrO₂ 1.74, SnO₂ 1.01, ThO₂ 0.26, UO₂ 1.44, Nb₂O₅ 42.80, Ta₂O₅ 26.77, total 99.96. The empirical formula is (Nb_1.59\({\text{Mn}}_{{1.04}}^{{2 + }}\)Ta_0.59Ti_0.47Sc_0.13Zr_0.07Y_0.06Sn_0.03U_0.03\({\text{Fe}}_{{0.01}}^{{3 + }}\))_Σ4.02O₈ (Z = 1). The crystal structure was determined using single-crystal X-ray diffraction data and refined to R = 0.0474. The new mineral is isostructural to other ixiolite-group members. Nioboixiolite-(Mn²⁺) is orthorhombic, space group: Pbcn, a = 4.762(2) Å, b = 5.739(1) Å, c = 5.149(1) Å, V = 140.7(1) Å³. The strongest lines of the powder X-ray diffraction pattern [d, Å (I, %) (hkl)] are: 3.662 (29) (110), 2.984 (100) (111), 2.505 (21) (021), 1.775 (21) (130), 1.748 (28) (202), 1.726 (35) (221), 1.553 (20) (113), 1.473 (19) (023), 1.463 (30) (311, 132).

Keywords

nioboixiolite-(Mn²⁺), new mineral, ixiolite group, columbite supergroup, crystal structure, Malkhan pegmatite field

References

Alekseev V.I., Gembitskaya I.M., Marin Yu.B. Wolframo-ixiolite and niobium ferberite from zinnwaldite granites of Chukotka. Zapiski RMO (Proc. Russian Miner. Soc.). 2010. Vol. 139(3). P. 72–85 (in Russian).
Badanina E.V., Gordienko V.V., Wiechovski A., Friedrich G. Sc- and REE-bearing ixiolite and associated minerals from the Sosedka pegmatite vein in the Malkhan pegmatite field, central Transbaikal region. Geol. Ore Deposits. 2008. Vol. 50. P. 772–781.
Baumgarte A., Blachnik R. Phase relations in the system titaniumdioxide-diniobium-zinc-hexoxide. Mater. Res. Bull. 1992. Vol. 27. P. 1287–1294.
Britvin S.N., Dolivo-Dobrovolsky D.V., Krzhizhanovskaya M.G. Software for processing the X-ray powder diffraction data obtained from the curved image plate detector of Rigaku RAXIS Rapid II diffractometer. Zapiski RMO (Proc. Russian Miner. Soc.). 2017. Vol. 146(3). P. 104–107 (in Russian).
Černý P., Němec D. Pristine vs. contaminated trends in Nb,Ta-oxide minerals of the Jihlava pegmatite district, Czech Republic. Mineral. Petrol. 1995. Vol. 55. P. 117–129.
Chukanov N.V. Infrared spectra of mineral species: Extended library. Dordrecht–Heidelberg–New York–London: Springer-Verlag GmbH, 2014. 1716 p.
Chukanov N.V., Pasero M., Aksenov S.M., Britvin S.N., Zubkova N.V., Yike L., Witzke T. Columbite supergroup of minerals: nomenclature and classification. Miner. Mag. 2022. https://doi.org/10.1180/mgm.2022.105
Chukhrov F.V., Bonshtedt-Kupletskaya E.M. (eds.) Minerals. Vol. II. Part 3. Moscow: Nauka, 1967. 676 p. (in Russian).
Dera P., Prewitt C.T., Boctor N.Z., Hemley R.J. Characterization of a high-pressure phase of silica from the Martian meteorite Shergotty. Amer. Miner. 1967. Vol. 87. P. 1018–1023.
El Goresy A., Dera P., Sharp T.G., Hemley R.J. Seifertite, a dense orthorhombic polymorph of silica from the Martian meteorites Shergotty and Zagami. Eur. J. Miner. 2008. Vol. 20. P. 523–528.
Ganfu Shen. Discreditation of ashanite. Acta Mineral. Sinica. 1998. Vol. 18(2). P. 230–233 (in Chinese).
Harrison W.T.A., Cheetham A.K. Structural and magnetic properties of FeNbO4-II. Mater. Res. Bull. 1989. Vol. 24. P. 523–527.
Jambor J.L., Puziewicz J., Roberts A.C. New mineral names. Amer. Miner. 1999. Vol. 84, P. 685–688.
von Knorring O.V., Sahama Th.G. Scandian ixiolite from Mozambique and Madagascar. Bull. Geol. Soc. Finland. 1969. Vol. 41. P. 75–77.
Mineralogy of the Urals. Oxides and Hydroxides. Part 1. Miass–Ekaterinburg: Uralian Branch RAS, 2000 (in Russian).
Nickel E.H., Rowland, J.F. McAdam R.C. Ixiolite – a columbite substructure. Amer. Miner. 1963. Vol. 48. P. 961–979.
Pourroy G., Lutanie E., Poix P. Transition orthorhombic ↔ rutile in xMFeO4–(1 – x)ZnF2 phases (M = Ta, Nb and x > 0.7). J. Solid State Chem. 1990. Vol. 86. P. 41–49.
Rigaku Oxford Diffraction. CrysAlisPro Software System, v. 1.171.39.46, Rigaku Corporation, Oxford, UK. 2018.
Sheldrick G.M. Crystal structure refinement with SHELXL. Acta Cryst. 2015. Vol. C71. P. 3–8.
Taggart J.E., Jr., Foord E.E., Rosenzweig A., Hanson T. Scrutinyite, natural occurrences of α-PbO2 from Bingham, New Mexico, USA, and Mapimi, Mexico. Canad. Miner. 1988. Vol. 26. P. 905–910.
Willgallis A., Hartl H. (Zr0.33Ti0.67)O2 – ein natürliches Zirkonium-Titanoxid mit α-PbO2-Struktur. Z. Krist. 1983. Vol. 164. P. 59–66 (in German).
Willgallis A., Siegmann E. Hettiaratchi T. Srilankite, a new Zr–Ti-oxide mineral. N. Jahrbuch Mineral. Monatsh. 1983. P. 151–157.
Wise M.A., Černý P. First U.S. Occurrence of wodginite from Powhatan County, Virginia. Amer. Miner. 1984. Vol. 69. P. 807–809.
Wise M.A., Turnock A.C., Černý P. Improved unit cell dimensions for ordered columbite-tantalite end members. N. Jahrbuch Mineral. Monatsh. 1985. P. 372–378.
Wise M.A., Černý P., Falster A.U. Scandium substitution in columbite-group minerals and ixiolite. Canad. Miner. 1985. Vol. 36. P. 673–680.
Zaslavskiy A.I., Tolkachev S.S. The structure of α-modification of lead dioxide. J. Phys. Chem. 1952. Vol. 26. P. 743–752 (in Russian).
Zhan Rubo, Tian Huixin, Peng Zhizhong, Ma Zhesheng, Han Fengming, Jing Zebei. A new mineral – ashanite, (Nb,Ta,U,Fe,Mn)4O8. Chinese Sci. Bull. (Kexue Tongbao). 1980. Vol. 25(6). P. 510–514.
Zhang L., Popov D., Meng Y., Wang J., Ji C., Li B., Mao H.-K. In-situ crystal structure determination of seifertite SiO2 at 129 GPa: Studying a minor phase near Earth’s core–mantle boundary. Amer. Miner. 2016. Vol. 101. P. 231–234.
Zubkova N.V., Chukanov N.V., Pekov I.V., Ternes B., Schüller W., Pushcharovsky D.Yu. Ta-free Nb‑dominant ixiolite analogue from the Eifel paleovolcanic region, Germany, and its crystal structure. On the problem of “ashanite”. Zapiski RMO (Proc. Russian Miner. Soc.). 2020. Vol. 149(4). P. 125–134.