It is pointed out, that the charge transfer in the compound in paramagnetic region has a ferron type of transport with ferrons of a small radius, predicted by N. Mott. For some another specimen the charge transfer may be carried out by ferrons of a large radius at very low temperatures. The results are well confirmed by the temperature dependence of resistivity and by metal type of the compound.
@article{arxiv.1101.4904,
title = {Ferron Type of Coductivity in Metal CuFeSe2},
author = {A. M. Polubotko},
journal= {arXiv preprint arXiv:1101.4904},
year = {2015}
}