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Because of the absence of liquid water on Mars’s surface today, those rusty red minerals were thought to arise from dry iron oxides present in the dust, such as hematite.—Doyle Rice, USA TODAY, 26 Feb. 2025 The scientists decided that the planet’s red color more closely matches that of iron oxides containing water, called ferrihydrite.—Paul Smaglik, Discover Magazine, 25 Feb. 2025 The scientists created their own Martian dust in a laboratory using different types of iron oxide.—Ashley Strickland, CNN, 25 Feb. 2025 The mesh coating relies on iron oxide and Nafion, which is a fluoropolymer-copolymer material that is often used in fuel cells.—IEEE Spectrum, 15 Jan. 2025 See All Example Sentences for iron oxide
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