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  1. No Access

    Article

    Sites and Origin of Noble Gases in Minerals: A Case Study of Amphibole from Alkaline Granitoids of the Kola Peninsula

    The paper presents newly acquired data on the budget and mobility of isotopes of noble gases in samples of amphibole, a mineral commonly characterized by relatively high He concentrations compared to other roc...

    M. A. Gannibal, I. N. Tolstikhin, A. B. Verchovsky… in Geochemistry International (2018)

  2. No Access

    Article

    Growth of heavily doped LiNbO3〈Zn〉 crystals

    We have studied conditions for the growth of LiNbO3〈Zn〉 crystals in the composition range ≃4.0–8.91 mol % ZnO. It has been shown that, in the composition range ≃4–6.8 mol % ZnO in the melt, compositionally and op...

    M. N. Palatnikov, I. V. Biryukova, O. V. Makarova, V. V. Efremov… in Inorganic Materials (2015)

  3. No Access

    Article

    Residence sites and origin of noble gases in minerals as exemplified by ilmenite from the alkaline granites of the Kola Peninsula

    Thermal analysis of helium release from ilmenite of alkaline granites (Ponoy Massif, Kola Peninsula) and extraction of gases by crushing, melting and vacuum stepwise heating of sample revealed that this mineral c...

    I. N. Tolstikhin, V. I. Skiba, A. Yu. Sevost’yanov… in Geochemistry International (2014)

  4. No Access

    Article

    The tritium-helium-3 method and its application to groundwater dating by the example of the Kirovsk mine region, Murmansk oblast

    The measurement of 3H, 3He, 4He, and 20Ne concentrations in waters at the Tsentralny pum** station (southern Khibiny massif, Kola Peninsula) showed that they are a mixture of young (>90%) and old (<10%) waters....

    A. V. Gudkov, I. L. Kamensky, G. S. Melikhova, V. I. Skiba… in Geochemistry International (2014)

  5. No Access

    Article

    Determining the genesis of decrepitating and nondecrepitating microinclusions in minerals by the investigation of helium and argon isotopes

    Previously published data were analyzed on the isotopic systematics of noble gases extracted from samples using various methods. By the example of four minerals from the rocks of the Kola Peninsula, it was sho...

    I. L. Kamensky, V. I. Skiba in Geochemistry International (2011)

  6. No Access

    Article

    Solubility of Apatite in Aluminosilicate Melts of the Albite–Diopside, Anorthite–Diopside, and Orthoclase–Diopside Systems

    The liquidus surface temperatures, eutectic temperatures and compositions, phase crystallization fields, and phase separation regions are determined for the albite–apatite, anorthite–apatite, orthoclase–apatit...

    V. N. Makarov, O. V. Suvorova, I. V. Makarova, V. I. Skiba… in Glass Physics and Chemistry (2002)

  7. No Access

    Article

    Effects of nonstoichiometry and do** on the curie temperature and defect structure of lithium niobate

    LiNbO3 crystals doped with Gd, Zn, Cu, and Er to various levels were grown by the Czochralski technique. The structural parameters, Curie temperature, and density of the LiNbO3<Gd> crystals were determined as a f...

    M. N. Palatnikov, N. V. Sidorov, V. I. Skiba, D. V. Makarov… in Inorganic Materials (2000)

  8. No Access

    Article

    Cell-zonal textures of tinguaites from the Kola Peninsula

     Textures of tinguaite dykes cutting the alkaline Khibiny massif in the Kola Peninsula, Russia, are described. They are characterized by a combination of a fractal microfracture network dividing rock into penc...

    Y. L. Voitsekhovsky, A. K. Shpachenko, V. I. Skiba in Geologische Rundschau (1997)