  In the present paper, we study a new type of large-scale instability, which
arises in obliquely rotating electroconductive fluids with a small-scale
external force of zero helicity. This force excites small-scale velocity
oscillations with a small Reynolds number. We used the method of multiscale
asymptotic expansions. The nonlinear equations for vortex and magnetic
perturbations motions are obtained up to third order in Reynolds number. The
linear stage of the magneto-vortex dynamo, arising as a result of instabilities
of the type of hydrodynamic and magnetohydrodynamic $\alpha $ - effects, is
investigated. Stationary solutions of nonlinear equations of magneto-vortex
dynamo in the form of localized chaotic structures are found numerically.
