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Gallium is typically extracted from bauxite ores as they are being processed to make aluminum oxide, while zinc miners sometimes squeeze germanium out of waste produced during refining.—Maddie Stone, WIRED, 15 Feb. 2025 The hydrogen releases, and the rest turns into aluminum oxide, a waste product that can be recycled to create more buttons.—IEEE Spectrum, 1 May 2020 The atmospheric burn-up of satellites during their fall to Earth produces aluminum oxide, which can destroy atmospheric ozone and alter Earth's albedo — its ability to reflect sunlight.—Tereza Pultarova, Space.com, 20 Jan. 2025 The material is a synthetic form of aluminum oxide, one of the hardest substances second only to diamond.—Paige Reddinger, Robb Report, 19 Dec. 2024 See All Example Sentences for aluminum oxide
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