The keyword is "Goldschmidt classification": https://en.wikipedia.org/wiki/Goldschmidt_classification https://en.wikipedia.org/wiki/Goldschmidt_classification

The keyword is "Goldschmidt classification": https://en.wikipedia.org/wiki/Goldschmidt_classification https://en.wikipedia.org/wiki/Goldschmidt_classification Those who would like to know more could do worse than pick up Greenwood's & Earnshaw's book (this one: https://www.amazon.com/-/dp/0750633654 https://www.amazon.com/-/dp/0750633654) from the nearest university library, it has a chapter on nucleogenesis and cosmic and geologic abundances.