  The normal-state in-plane resistivity below the zero-field superconducting
transition temperature $T_c$ and the upper critical field Hc2 were measured by
suppressing superconductivity in pulsed magnetic fields for
K0.70Fe1.46Se1.85Te0.15. The normal-state resistivity $\rho_{ab}$ is found to
increase logarithmically with decrasing temperature as
$\frac{T}{T_c}\rightarrow 0$. Similar to granular metals, our results suggest
that a superconductor - insulator transition below zero-field T$_{c}$ may be
induced in high magnetic fields. This is related to the intrinsic real-space
phase-separated states common to all inhomogeneous superconductors.
