The vortex phases in the high-quality Bi2Sr2CaCu 2O8+δ single crystal have been studied by means of the local ac-magnetic permeability measurements by using the miniature coils. The structural transition has been indicated in the vortex solid phase, where the linear dependence of the 1st order vortex melting phase transition Hcm(Hab), a fingerprint of the crossing lattice, sharply changes its character, and separates the strong pinning pancake-vortex phase from the weak pinning phase. The phase transition from the crossing lattice to the tilted vortex lattice near the ab-plane is suggested. © 2006 American Institute of Physics.