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.
Platinum, Alaska
During World War II, the Alaska Territorial Guard served to safeguard it against Japanese attack as it was the only source of the strategic metal platinum in the Western Hemisphere.