The asteroid 16 Psyche is believed to contain 7019170000000000000♠1.7×1019 kg of nickel–iron, which could supply the world production requirement for several million years.
Usutakse, et asteroidi 16 Psyche sisaldab 1,7×1019 kg kg nikkel-rauda, mis võimaldaks rahuldada maailma tootmisvajadusi mitmeks miljoniks aastaks.