Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia

Igor V. Pekov, Natalia V. Zubkova, Vasiliy O. Yapaskurt, Inna S. Lykova, Nikita V. Chukanov, Dmitry I. Belakovskiy, Sergey N. Britvin, Anna G. Turchkova, Dmitry Y. Pushcharovsky

Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

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The new mineral alexkhomyakovite K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O (IMA2015-013) occurs in a peralkaline pegmatite at Mt. Koashva, Khibiny alkaline complex, Kola peninsula, Russia. It is a hydrothermal mineral associated with villiaumite, natrite, potassic feldspar, pectolite, sodalite, biotite, lamprophyllite, titanite, fluorapatite, wadeite, burbankite, rasvumite, djerfisherite, molybdenite and an incompletely characterized Na-Ca silicate. Alexkhomyakovite occurs as equant grains up to 0.2 mm, veinlets up to 3 cm long and up to 1 mm thick and fine-grained aggregates replacing delhayelite. Alexkhomyakovite is transparent to translucent, colourless, white or grey, with vitreous to greasy lustre. It is brittle, the Mohs hardness is ca. 3. No cleavage was observed, the fracture is uneven. D-meas = 2.25(1), D-calc = 2.196 g cm(-3). Alexkhomyakovite is optically uniaxial (-), omega = 1.543(2), epsilon = 1.476(2). The infrared spectrum is reported. The chemical composition [wt%, electron microprobe data, CO2 and H2O contents calculated for 5 (CO3) and 6 (H2O) per formula unit (pfu), respectively] is: Na2O 4.09, K2O 35.72, CaO 14.92, MnO 0.01, FeO 0.02, SO3 0.11, Cl 4.32, CO2 28.28, H2O 13.90, -O=Cl -0.98, total 100.39. The empirical formula calculated on the basis of 9 metal cations pfu is K5.90Ca2.07Na1.03(CO3)(5)(SO4)(0.01)O0.05Cl0.95 center dot 6H(2)O. The numbers of CO3 groups and H2O molecules are based on structure data. Alexkhomyakovite is hexagonal, P6(3)/mcm, a 9.2691(2), c 15.8419(4) angstrom, V 1178.72(5) angstrom(3) and Z = 2. The strongest reflections of the powder X-ray diffraction pattern [d angstrom(I)(hkl)] are: 7.96(27)(002), 3.486(35)(113), 3.011(100)(114), 2.977(32)(211), 2.676(36)(300), 2.626(42)(213, 115), 2.206(26)(311) and 1.982(17)(008). The crystal structure (solved from single-crystal X-ray diffraction data, R = 0.0578) is unique. It is based on (001) heteropolyhedral layers of pentagonal bipyramids (Ca,Na)O-5(H2O)(2) interconnected via carbonate groups of two types, edge-sharing ones and vertex-sharing ones. Ca and Na are disordered. Ten-fold coordinated K cations centre KO6Cl(H2O)(3) polyhedra on either side of the heteropolyhedral layer. A third type of carbonate group and Cl occupy the interlayer. The mineral is named in honour of the outstanding Russian mineralogist Alexander Petrovich Khomyakov (1933-2012).

Язык оригиналаанглийский
Страницы (с-по)135-143
Число страниц9
ЖурналEuropean Journal of Mineralogy
Том31
Номер выпуска1
DOI
СостояниеОпубликовано - 21 фев 2019

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    Pekov, I. V., Zubkova, N. V., Yapaskurt, V. O., Lykova, I. S., Chukanov, N. V., Belakovskiy, D. I., ... Pushcharovsky, D. Y. (2019). Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia. European Journal of Mineralogy, 31(1), 135-143. https://doi.org/10.1127/ejm/2018/0030-2798
    Pekov, Igor V. ; Zubkova, Natalia V. ; Yapaskurt, Vasiliy O. ; Lykova, Inna S. ; Chukanov, Nikita V. ; Belakovskiy, Dmitry I. ; Britvin, Sergey N. ; Turchkova, Anna G. ; Pushcharovsky, Dmitry Y. / Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia. В: European Journal of Mineralogy. 2019 ; Том 31, № 1. стр. 135-143.
    @article{f06010e8d98e496a8468d360856d0c35,
    title = "Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia",
    abstract = "The new mineral alexkhomyakovite K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O (IMA2015-013) occurs in a peralkaline pegmatite at Mt. Koashva, Khibiny alkaline complex, Kola peninsula, Russia. It is a hydrothermal mineral associated with villiaumite, natrite, potassic feldspar, pectolite, sodalite, biotite, lamprophyllite, titanite, fluorapatite, wadeite, burbankite, rasvumite, djerfisherite, molybdenite and an incompletely characterized Na-Ca silicate. Alexkhomyakovite occurs as equant grains up to 0.2 mm, veinlets up to 3 cm long and up to 1 mm thick and fine-grained aggregates replacing delhayelite. Alexkhomyakovite is transparent to translucent, colourless, white or grey, with vitreous to greasy lustre. It is brittle, the Mohs hardness is ca. 3. No cleavage was observed, the fracture is uneven. D-meas = 2.25(1), D-calc = 2.196 g cm(-3). Alexkhomyakovite is optically uniaxial (-), omega = 1.543(2), epsilon = 1.476(2). The infrared spectrum is reported. The chemical composition [wt{\%}, electron microprobe data, CO2 and H2O contents calculated for 5 (CO3) and 6 (H2O) per formula unit (pfu), respectively] is: Na2O 4.09, K2O 35.72, CaO 14.92, MnO 0.01, FeO 0.02, SO3 0.11, Cl 4.32, CO2 28.28, H2O 13.90, -O=Cl -0.98, total 100.39. The empirical formula calculated on the basis of 9 metal cations pfu is K5.90Ca2.07Na1.03(CO3)(5)(SO4)(0.01)O0.05Cl0.95 center dot 6H(2)O. The numbers of CO3 groups and H2O molecules are based on structure data. Alexkhomyakovite is hexagonal, P6(3)/mcm, a 9.2691(2), c 15.8419(4) angstrom, V 1178.72(5) angstrom(3) and Z = 2. The strongest reflections of the powder X-ray diffraction pattern [d angstrom(I)(hkl)] are: 7.96(27)(002), 3.486(35)(113), 3.011(100)(114), 2.977(32)(211), 2.676(36)(300), 2.626(42)(213, 115), 2.206(26)(311) and 1.982(17)(008). The crystal structure (solved from single-crystal X-ray diffraction data, R = 0.0578) is unique. It is based on (001) heteropolyhedral layers of pentagonal bipyramids (Ca,Na)O-5(H2O)(2) interconnected via carbonate groups of two types, edge-sharing ones and vertex-sharing ones. Ca and Na are disordered. Ten-fold coordinated K cations centre KO6Cl(H2O)(3) polyhedra on either side of the heteropolyhedral layer. A third type of carbonate group and Cl occupy the interlayer. The mineral is named in honour of the outstanding Russian mineralogist Alexander Petrovich Khomyakov (1933-2012).",
    keywords = "BOND-VALENCE, Khibiny alkaline complex, Koashva apatite deposit, Kola peninsula, alexkhomyakovite, crystal structure, new mineral, peralkaline pegmatite, potassium carbonate hydrate",
    author = "Pekov, {Igor V.} and Zubkova, {Natalia V.} and Yapaskurt, {Vasiliy O.} and Lykova, {Inna S.} and Chukanov, {Nikita V.} and Belakovskiy, {Dmitry I.} and Britvin, {Sergey N.} and Turchkova, {Anna G.} and Pushcharovsky, {Dmitry Y.}",
    year = "2019",
    month = "2",
    day = "21",
    doi = "10.1127/ejm/2018/0030-2798",
    language = "English",
    volume = "31",
    pages = "135--143",
    journal = "European Journal of Mineralogy",
    issn = "0935-1221",
    publisher = "SCHWEIZERBART Science Publishers",
    number = "1",

    }

    Pekov, IV, Zubkova, NV, Yapaskurt, VO, Lykova, IS, Chukanov, NV, Belakovskiy, DI, Britvin, SN, Turchkova, AG & Pushcharovsky, DY 2019, 'Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia' European Journal of Mineralogy, том. 31, № 1, стр. 135-143. https://doi.org/10.1127/ejm/2018/0030-2798

    Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia. / Pekov, Igor V.; Zubkova, Natalia V.; Yapaskurt, Vasiliy O.; Lykova, Inna S.; Chukanov, Nikita V.; Belakovskiy, Dmitry I.; Britvin, Sergey N.; Turchkova, Anna G.; Pushcharovsky, Dmitry Y.

    В: European Journal of Mineralogy, Том 31, № 1, 21.02.2019, стр. 135-143.

    Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

    TY - JOUR

    T1 - Alexkhomyakovite, K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O, a new mineral from the Khibiny alkaline complex, Kola peninsula, Russia

    AU - Pekov, Igor V.

    AU - Zubkova, Natalia V.

    AU - Yapaskurt, Vasiliy O.

    AU - Lykova, Inna S.

    AU - Chukanov, Nikita V.

    AU - Belakovskiy, Dmitry I.

    AU - Britvin, Sergey N.

    AU - Turchkova, Anna G.

    AU - Pushcharovsky, Dmitry Y.

    PY - 2019/2/21

    Y1 - 2019/2/21

    N2 - The new mineral alexkhomyakovite K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O (IMA2015-013) occurs in a peralkaline pegmatite at Mt. Koashva, Khibiny alkaline complex, Kola peninsula, Russia. It is a hydrothermal mineral associated with villiaumite, natrite, potassic feldspar, pectolite, sodalite, biotite, lamprophyllite, titanite, fluorapatite, wadeite, burbankite, rasvumite, djerfisherite, molybdenite and an incompletely characterized Na-Ca silicate. Alexkhomyakovite occurs as equant grains up to 0.2 mm, veinlets up to 3 cm long and up to 1 mm thick and fine-grained aggregates replacing delhayelite. Alexkhomyakovite is transparent to translucent, colourless, white or grey, with vitreous to greasy lustre. It is brittle, the Mohs hardness is ca. 3. No cleavage was observed, the fracture is uneven. D-meas = 2.25(1), D-calc = 2.196 g cm(-3). Alexkhomyakovite is optically uniaxial (-), omega = 1.543(2), epsilon = 1.476(2). The infrared spectrum is reported. The chemical composition [wt%, electron microprobe data, CO2 and H2O contents calculated for 5 (CO3) and 6 (H2O) per formula unit (pfu), respectively] is: Na2O 4.09, K2O 35.72, CaO 14.92, MnO 0.01, FeO 0.02, SO3 0.11, Cl 4.32, CO2 28.28, H2O 13.90, -O=Cl -0.98, total 100.39. The empirical formula calculated on the basis of 9 metal cations pfu is K5.90Ca2.07Na1.03(CO3)(5)(SO4)(0.01)O0.05Cl0.95 center dot 6H(2)O. The numbers of CO3 groups and H2O molecules are based on structure data. Alexkhomyakovite is hexagonal, P6(3)/mcm, a 9.2691(2), c 15.8419(4) angstrom, V 1178.72(5) angstrom(3) and Z = 2. The strongest reflections of the powder X-ray diffraction pattern [d angstrom(I)(hkl)] are: 7.96(27)(002), 3.486(35)(113), 3.011(100)(114), 2.977(32)(211), 2.676(36)(300), 2.626(42)(213, 115), 2.206(26)(311) and 1.982(17)(008). The crystal structure (solved from single-crystal X-ray diffraction data, R = 0.0578) is unique. It is based on (001) heteropolyhedral layers of pentagonal bipyramids (Ca,Na)O-5(H2O)(2) interconnected via carbonate groups of two types, edge-sharing ones and vertex-sharing ones. Ca and Na are disordered. Ten-fold coordinated K cations centre KO6Cl(H2O)(3) polyhedra on either side of the heteropolyhedral layer. A third type of carbonate group and Cl occupy the interlayer. The mineral is named in honour of the outstanding Russian mineralogist Alexander Petrovich Khomyakov (1933-2012).

    AB - The new mineral alexkhomyakovite K-6(Ca2Na)(CO3)(5)Cl center dot 6H(2)O (IMA2015-013) occurs in a peralkaline pegmatite at Mt. Koashva, Khibiny alkaline complex, Kola peninsula, Russia. It is a hydrothermal mineral associated with villiaumite, natrite, potassic feldspar, pectolite, sodalite, biotite, lamprophyllite, titanite, fluorapatite, wadeite, burbankite, rasvumite, djerfisherite, molybdenite and an incompletely characterized Na-Ca silicate. Alexkhomyakovite occurs as equant grains up to 0.2 mm, veinlets up to 3 cm long and up to 1 mm thick and fine-grained aggregates replacing delhayelite. Alexkhomyakovite is transparent to translucent, colourless, white or grey, with vitreous to greasy lustre. It is brittle, the Mohs hardness is ca. 3. No cleavage was observed, the fracture is uneven. D-meas = 2.25(1), D-calc = 2.196 g cm(-3). Alexkhomyakovite is optically uniaxial (-), omega = 1.543(2), epsilon = 1.476(2). The infrared spectrum is reported. The chemical composition [wt%, electron microprobe data, CO2 and H2O contents calculated for 5 (CO3) and 6 (H2O) per formula unit (pfu), respectively] is: Na2O 4.09, K2O 35.72, CaO 14.92, MnO 0.01, FeO 0.02, SO3 0.11, Cl 4.32, CO2 28.28, H2O 13.90, -O=Cl -0.98, total 100.39. The empirical formula calculated on the basis of 9 metal cations pfu is K5.90Ca2.07Na1.03(CO3)(5)(SO4)(0.01)O0.05Cl0.95 center dot 6H(2)O. The numbers of CO3 groups and H2O molecules are based on structure data. Alexkhomyakovite is hexagonal, P6(3)/mcm, a 9.2691(2), c 15.8419(4) angstrom, V 1178.72(5) angstrom(3) and Z = 2. The strongest reflections of the powder X-ray diffraction pattern [d angstrom(I)(hkl)] are: 7.96(27)(002), 3.486(35)(113), 3.011(100)(114), 2.977(32)(211), 2.676(36)(300), 2.626(42)(213, 115), 2.206(26)(311) and 1.982(17)(008). The crystal structure (solved from single-crystal X-ray diffraction data, R = 0.0578) is unique. It is based on (001) heteropolyhedral layers of pentagonal bipyramids (Ca,Na)O-5(H2O)(2) interconnected via carbonate groups of two types, edge-sharing ones and vertex-sharing ones. Ca and Na are disordered. Ten-fold coordinated K cations centre KO6Cl(H2O)(3) polyhedra on either side of the heteropolyhedral layer. A third type of carbonate group and Cl occupy the interlayer. The mineral is named in honour of the outstanding Russian mineralogist Alexander Petrovich Khomyakov (1933-2012).

    KW - BOND-VALENCE

    KW - Khibiny alkaline complex

    KW - Koashva apatite deposit

    KW - Kola peninsula

    KW - alexkhomyakovite

    KW - crystal structure

    KW - new mineral

    KW - peralkaline pegmatite

    KW - potassium carbonate hydrate

    UR - http://www.scopus.com/inward/record.url?scp=85063636435&partnerID=8YFLogxK

    U2 - 10.1127/ejm/2018/0030-2798

    DO - 10.1127/ejm/2018/0030-2798

    M3 - Article

    VL - 31

    SP - 135

    EP - 143

    JO - European Journal of Mineralogy

    JF - European Journal of Mineralogy

    SN - 0935-1221

    IS - 1

    ER -