Browsing by Author "Ma Z."

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  • QUADRUPOLE SPLITTING DISTRIBUTIONS IN TRICLINIC ASTROPHYLLITE 
    Li Z.; Ye D.; Ma Z.; Xiong M.; Shi N.; Khomyakov A. (2003)
    The mineral, triclinic astrophyllite, was investigated using the Mossbauer effect. The Mossbauer spectra of triclinic astrophyllite at 298 K, 180 K and 90 K were measured, and the quadrupole splitting distributions (QSDs) ...
  • STRUCTURE REFINEMENT OF ASTROPHYLLITE 
    Ma Z.; Li G.; Shi N.; Zhou H.; Ye D.; Pushcharovsky D.Yu. (2001)
    The crystal structure of astrophyllite K2Na(Fe, Mn, Mg,□)7[Ti2(Si4O12)2|O3](OH, F)4 has been refined. The dimensions of the triclinic unit cell are: a = 0.5359(2) nm,b = 1.1614(4) nm, c = 1.1861(4) nm, α= 113.16(2)°, β= ...
  • SUB-REGIONAL DESCRIPTIONS OF GLOBAL GPS VECTOR FIELD AND ITS GEODYNAMIC SIGNIFICANCE 
    Ma Z.; Zhang J.; Ren J.; Li Z. (2006)
    Based on the global vector field of plate movement shown by GPS stations chosen averagely, some characteristics of present plate tectonics can be distinguished as follows: (1) from the northern Atlantic ridge to the island ...