Where does gold come from on Earth?

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Tags

1. #during
2. #centre
3. #enough
4. #planet
5. #majority
6. #precious
7. #entire
8. #there
9. #layer
10. #metre
11. #formation
12. #earth
13. #metals
14. #molten
15. #surface
16. #thick
17. #platinum
18. #cover