  If neutrino conversions within the Sun result in partial polarization of
initial solar neutrino fluxes then a new opportunity to distinguish Majorana
and Dirac neutrinos by measuring the differential $\nu_ee$-scattering cross
section in solar neutrino detectors arises. The experiment like HELLAZ would be
preferable in testing of recoil electron spectra differences initiated by
Majorana and Dirac neutrinos since low energy recoil electrons ($T\geq 100
keV$) can be detected and electron energy and direction can be determined with
good precision.
