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Natural 4 zeros texture mass matrices recently proposed by Fritzsch and Xinghave been investigated by including `non-leading'corrections in the context oflatest data regarding m_t^{pole} and V_{CKM} matrix elements. Apart fromaccommodating m_t^{pole} in the range 175\pm15 GeV, |V_{cb}| and|V_{ub}/V_{cb}|=0.08\pm0.02, the analysis with maximal CP-violation predicts|V_{td}| = .005-.013. Further, the CP-violating phase angle \delta can berestricted to the ranges (i) 22^o -45^o and (ii) 95^o - 130^o, concretizing theambiguity regarding phase of CKM matrix. Furthermore, we find that non-leadingcalculations are important when `Cabibbo triangle' is to be linked to unitaritytriangle.Comment: 8 LaTeX pages with 1 figure (to be published in PRD as brief Report

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Fritzsch-Xing mass matrices,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>V</mml:mi></mml:mrow><mml:mrow><mml:mi>td</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>,</mml:mo></mml:math>and the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CP</mml:mi></mml:math>-violating phase δ

Fritzsch-Xing mass matrices,Vtd,and theCP-violating phase δ