  We present an analysis of the relative abundance features of a number of
chemical elements in the atmospheres of metal-rich ($\rm{[Fe/H]} > -1.0$)
Galactic-field RR~Lyrae variable stars and the kinematic characteristics of
these stars. We have previously shown that the relative abundances of some
$\alpha$-elements: magnesium, silicon, calcium, and to a greater extent of
titanium, as well as yttrium and scandium in such stars are lower than in most
of other types of stars, bearing similar metallicity. It is found here that
some of these metal-rich RR~Lyrae stars also have very low relative abundances
of sodium, aluminum and nickel. The orbital parameters of all the metal-rich
RR~Lyrae variables studied in this paper are typical of the Galactic thin or
thick disk objects, however, unusual chemical composition let us to suggests a
possible extragalactic origin for some of them.
