Round 3: Tossup 16

Octahedra of this element’s oxyanion are linked to silicate tetrahedra in kaolinite. Inclusions of calcium and this element are used to define the age of the solar system. Oxides of this non-transition metal element are passed through a flame-fusion process named for Verneuil. Oxides of silicon and this element make up adsorbent, microporous catalysts known as zeolites. All (*) feldspars contain silicon, (10[1])oxygen, and this element. (-5[1])This element is the most abundant metal in Earth’s crust. (10[1]-5[1])The Bayer process refines the oxide of this element from its ore, bauxite. (-5[1])For 10 points, name this element usually found in soda cans and foil. (10[1])■END■ (10[2])

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