A New Occurrence of Maruyamaite     

Musiyachenko  K. A.  Korsakov  A. V.  Letnikov  F. A. 《Doklady Earth Sciences》2021,498(1):403-408

Doklady Earth Sciences - We report for the first time the occurrence of a maruyamaite (dravite with a high K content) + garnet + kyanite + biotite + muscovite + K-feldspar + quartz mineral...  相似文献   

New Data on Diamond–Graphite Relationships in the Gneisses of the Kokchetav Massif (Northern Kazakhstan)     

Mikhailenko  D. S.  Shchepetova  O. V.  Musiyachenko  K. A.  Korsakov  A. V.  Ohfuji  Hiroaki  Pekov  I. V. 《Doklady Earth Sciences》2018,480(2):814-817

The results of studying an aggregate of graphite-and-diamond crystal in tourmaline 5 μm of the Kokchetav massif by the method of transmission electron microscopy are presented. The detail studies of the interface between the crystals of graphite and diamond have revealed the absence of disordered graphite that is detail partially graphitized diamond. Intense deformation changes in the graphite crystal occurred after it was captured by tourmaline at the regression stage, which led to considerable kinking of the graphite crystal along the a-axis. Thus, the coexistence of graphite and diamond crystals cannot be unambiguously interpreted as a product of partial diamond graphitization. Graphite could have crystallized syngenetic with a diamond crystal or at the retrograde stage in the graphite stability field.

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Compressibility and structure behaviour of maruyamaite (K-tourmaline) from the Kokchetav massif at high pressure up to 20 GPa     

Likhacheva  Anna Yu.  Rashchenko  S. V.  Musiyachenko  Kira A.  Korsakov  Andrey V.  Collings  Ines E.  Hanfland  Michael 《Mineralogy and Petrology》2019,113(5):613-623

Mineralogy and Petrology - The structural behaviour of maruyamaite (K-dominant tourmaline) X(K0.54Na0.28Ca0.19)Y(Mg1.3Al1.17Fe0.39Ti0.14)Z(Al5Mg)[Si5.95Al0.05O18](BO3)3V,W[O1.69(OH)2.31] from the...  相似文献