Platinum
Platinum exists in higher abundances on the Moon and in meteorites. Correspondingly, platinum is found in slightly higher abundances at sites of bolide impact on Earth that are associated with resulting post-impact volcanism, and can be mined economically; the Sudbury Basin is one such example.
Hans Merensky
In 1924 he followed up the discovery of alluvial platinum by A F Lombard on his farm in Lydenburg and discovered its source in the Bushveld Igneous Complex which set him on the road to financial recovery. This deposit came eventually to be known as the Merensky Reef, which contains 75 per cent of the world's known platinum resources.