How abundant is boron in Earth’s crust?

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A labeled diagram of the periodic table entry for boron shows its atomic number 5, symbol B, electron configuration, atomic weight range, and classification as a solid, weakly acidic, other nonmetal with a rhombohedral crystal structure at room temperature. — boron Properties of boron.

Boron is an element of extremely low abundance in Earth’s crust, constituting approximately 0.001 percent by weight.1

Despite this low overall abundance, boron is readily available for commercial use because geochemical processes concentrate it into specific deposits, such as borax, kernite, and tincalconite.12