Carbon determination in natural crystals of olivines of deeporigin

Activation analysis and nuclear reaction analysis with registration of energy spectrum of forming prompt particles are used to determine carbon concentration and distribution in monocrystals of olivines. Carbon determination in olivine volume was carried out by activation analysis by 12C(d, n)13N reaction and surface content - by registration of protons resulting from 12C(d, p)13C reaction. The deuteron energy being 1.8-2.7 MeV, carbon determination limit and the analysis error were 10-3 and 20 relat.%, respectively. By means of IR spectroscopy it is shown that carbon constitutes part of crystal lattice of olivines in monatomic form