Abstract
Trachyriolites and komendites of the Pechalninsky ore field contain high potentially industrial concentrations of a number of rare metals and REE. The enrichment coefficients vary from several times (Zn, Ga, LREE) to tens (Be, Y, Zr, Nb, Rb and heavy HREE). The REE distribution indicates a uniform enrichment of the HREE relative to the LREE, with a ratio (La/Yb)N in the range from 0.16–1.01). All samples show strongly negative Eu anomalies, with values of Eu/Eu* – 0.13. A comparative analysis with similar objects known in the world in alkaline volcanites has shown that the Pechalninsky ore field can become an unconventional large-volume source of HREE.
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