Experimental study of inteake of gases by diamonds during crsytallization

摘要

The compostion of gases in diamond crytal, grown at th multi-anvil apparatus "BARS" in the Fe-Ni-C sysem udner pressure 55-60 kbar, temepature 1300 deg C-1500 deg C, has been studied. The source of the gases in experimens was their natural admixture in thte parent metal-carbonic schist. Thue gases occurred in diamonds in the scattered form in the zones of the crysal imperfecions as well as in the form of three-dimesnional inclusions iwth the szie of 5-40 mkm. The compositon of gaseous impurites in diamond has been stuided by heaing the crystal in H atomshpere under 600 deg C withthe followign chromatographic analysis fo the emanated gases on the coentent of H_2O,CO_2,CO,H_2,N_2,O_2,CH_4,C_2H-2,C_2H_4,C_2H_6,C_3H_N,H_2S,SO_2.