Abstract
In a large number of alpine rocks and respective mineral separates the beryllium distribution was studied via “non-destructive” photon activation. The detection limit of the assembly was ∼20 ppb. The existence of Be-rich areas was revealed. A selection of individual rocks was analysed by instrumental as well as by radiochemical neutron activation analysis for main and trace elements as: Na, K, Sc, Cr, Mn, Fe, Co, Rb, Cs, La, Eu, Yb, Ta, W, Au, and U. The latter was determined by counting the235U-fission tracks. The data supply an insight into the complex processes leading to the formation of metamorphic rocks. The hardware and the computer evaluation of the γ-spectra is described in some detail. A further application is the determination of traces of53Mn (in the order of 10−12 g/g) produced by the interaction of cosmic rays with stony meteorites. From a comparison of the26Al- and53Mn-values it is concluded that the depth dependent production of these two radionuclides differs slightly.
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Büling, A., Carl, C., Englert, P. et al. Computer assisted multielement analysis of terrestrial and extraterrestrial materials and studies on long-lived cosmogenic53Mn by neutron activation. J. Radioanal. Chem. 38, 379–390 (1977). https://doi.org/10.1007/BF02520214
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DOI: https://doi.org/10.1007/BF02520214