Browsing by Author "Yefimov A.V."

Browsing by Author "Yefimov A.V."

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  • BISMUTH RAMDOHRITE, A NEW SULFOSALT 
    Borodayev Y.S.; Mozgova N.N.; Nenasheva S.N.; Kuz'mina O.V.; Yefimov A.V.; Sivtsov A.V. (1989)
    While studying ore minerals of the Alyaskitovoye ['Alaskite'] tin-tungsten deposit in Yakutia, we found Bi-ramdohrite (≤ 22.5 weight percent bismuth). Among all hitherto known ramdohrites, it is closest in composition (sum ...
  • CRYSTAL STRUCTURE OF LAITAKARITE AS A FUNCTION OF ITS CHEMICAL COMPOSITION 
    Nenasheva S.N.; Mozgova N.N.; Borodayev Y.S.; Yefimov A.V.; Organova N.I. (1988)
    The study was done on laitakarite-bearing ore samples from the Nevskoye tin deposit in northeastern USSR and from the Orijarvi mine. In the polished sections studied, laitakarite is present as flaky grains a large as 0.8 ...
  • SPECTRAL CHARACTERISTICS OF IRREGULARITIES OF DENSITY OF MARINE SEDIMENTS AS INDICATED BY DEEP-SEA DRILLING DATA 
    Ivankin A.N.; Lysanov Y.P.; Yefimov A.V. (1988)
    Analysis of these data indicates that the dependence of the main acoustic characteristics of the sediments (density and sound velocity) on depth has the form of irregular fluctuations superposed on an overall (regular) ...