Most of the minerals found in the sand of continental beaches are supplied by:

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The minerals found in the sand of continental beaches are mostly supplied by rivers and streams. These water bodies carry sediment and minerals from land to the ocean, where they are deposited on the beach. Erosion of local coastal cliffs and glacial processes may also contribute some minerals, but they are not the primary source. Currents from the deep ocean floor are unlikely to bring significant amounts of minerals to continental beaches.

Most of the Minerals Found in the Sand of Continental