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Яндекс.Метрика

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2008 , 10

P CP CP PCҖPP PPCX PX PX P XPP (p)

.. p, .. C, . *
c p C P, 630090, cpc, pc. , 3, Pcc
* Department of Geological and Environmental Sciences, Ben-Gurion University of the Negev, POB 653, Beer-Sheva 84105, Israel
: pc, pp, p p, p p, p.
: 943-964
: P, X P

cppx ppcx px px p Xpp , p (p Xpp) p Fe-pc, pp p cc Ca3Ti(Fe,Al)2 O8 Ca5Ti(Fe,Al)4 O13. c p x, cc cc cp cp pc-pp pp. Fe-pc cp 18 .% Ca2 (Fe,Al)2 O5, pp Ca2 (Fe1-xAlx)2O5 pp p x = 0.15-0.55 CaTiO3 15 .%. p cc cc Ca3Ti(Fe,Al)2 O8 ( X ) Ca5Ti(Fe,Al)4 O13 ( Y) c cc . X px px px c c pc cp pc-pp. xpp p cc, cc Ca3Ti(Fe1.3Al0.7)O8 Ca3Ti(Fe1.6 Al0.4)O8. Y cpc p cc Ca5Ti(Fe0.76Al0.24)4O13. cx p cp xpp c pc Si, Cr, Sr, Zr LREE. x p p pc Fe-pc + pp, ccc c p CaTiO3-Ca2Fe2O5. c x-px (Fe-pc X ; pp X ± Y ). cc c p CaTiO3-Ca2Fe2O5, cc Fe-pc + X pp p px p p Xpp 1170-1200 C. cc pc c pp pp px p cpp c cpp-p p.