  Superconductivity in an uncompensated boron doped diamond, a very recent
observation, is strikingly close to an earlier observation of Anderson-Mott
insulator to metal transition, prompting us to suggest an electron correlation
driven superconductivity in an impurity band. Random coulomb potential remove a
three fold orbital degeneracy of boron acceptor states, resulting in an
effective single, narrow, tight binding and half filled band of holes. Singlet
coupling between spins of neighboring neutral acceptors $B^0-B^0$ is the seed
of pairing. Across the insulator to metal transition, a small and equal
fraction of charged $B^+$ and $B^-$ states (free carriers) get spontaneously
generated and delocalize. Thereupon neutral singlets resonate and get charged
resulting in a resonating valence bond (RVB) superconducting state.
