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It often contains mineral oxides of major crustal elements such as aluminum (Al), silicon (Si), calcium (Ca), iron (Fe), and titanium (Ti). It can also contain alkali metals such as potassium (K), sodium (Na), and lithium (Li); alkaline earth metals such as magnesium (Mg); and heavy metals such as lead (Pb), copper (Cu), nickel (Ni), and zinc (Zn). Mineral dust in particulate matter is light-absorbing.

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