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Earth's crust
Metals in the Earth's crust
Term | Definition |
---|---|
Composition of the Earth’s crust | Oxygen=45%, silicon=27%, all other metals=28% |
Native | elements uncombined as they are unreactive, e.g. Copper/silver/gold |
Scarce | rare, limited |
Scarce metals | Copper, mercury, zinc, silver, gold, lead, tin, platinum |
Metal ores | sodium chloride=sodium, bauxite=aluminum oxide |