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KhRIZOBERILL

chrysoberyl

KhRIZOBERILL (az yun. chrysos— tillo va berill), mineralest az zersinfi oksidhoi            murakkab. Ve AL 2 O4; ba sifati omekhtaho 3,5—6% Fe 1 Oz to 3% TI O2 va to 0,4 % Cr Oz dorad. Xrizoberill zard, sabz, qahvarang, surkh va bazan shaffofi berang meshavad.

Sakhtiash 8,5, zichiash 3,8 g/sm3. Navhoi shaffofu khushrangi Xrizoberill aleksandrit va simofan sanghoi qimatbahoyand. Asosan dar raghoi pegmatiki yoft meshavad.

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SATHI VINTI

SATHI VINTI, sathest, ki khati £ hangomi dar girdi mehvari nojunboni OO’ bo surati kunjii …