China Investment Corp <span style="line-height: 20.8px;">, the&nbsp;</span> $814 billion <span style="line-height: 20.8px;">&nbsp;sovereign fund, is leading an investor group in talks for a multibillion-dollar iron ore supply deal with indebted Brazilian miner&nbsp;</span> Vale SA <span style="line-height: 20.8px;">, people familiar with the matter said.</span>