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by CBLT 2636 days ago
As I understand it, the distribution was decided when the earth was still hot. So the mechanics you're interested in are those of high-temperature solutions containing liquid gold, which I don't understand that much. There's other interesting phenomena too, like gold frequently occurs in quartz rocks[0].

[0] https://www.quora.com/Why-is-gold-frequently-located-in-quar...