Examples are automatically compiled from online sources to
show current usage.Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Most copper, however, comes from chalcopyrite, a very common copper iron sulfide.—David Bressan, Forbes, 31 Dec. 2024 The bronze mineral remains less prevalent than pyrite, a fellow iron sulfide known as fool’s gold.—The Editors, JSTOR Daily, 31 Dec. 2024 These vents are rich in iron sulfides, compounds that play a role in carbon fixation, a fundamental process by which organisms convert carbon dioxide into organic molecules.—Thomas G. Moukawsher, Newsweek, 2 Dec. 2024 Hot springs, which are heated by volcanic activity beneath the Earth's surface, are rich in minerals, including iron sulfides.—Thomas G. Moukawsher, Newsweek, 2 Dec. 2024 When iron is also present, the hydrogen sulfide reacts with iron to form pyrite, which is iron sulfide.—Paul Smaglik, Discover Magazine, 29 Oct. 2024 This can then react with iron to form pyrite, which is iron sulfide.—Nina Turner, Newsweek, 29 Oct. 2024 For example, the iron sulfides that are the predominant mineral in nickel sulfide deposits produce distinct reddish rust when exposed to air and rainwater.—Josh Goldman, IEEE Spectrum, 29 Apr. 2023 Both Jowitt and Anthony Love, a geologist at Appalachian State University, said the rocks shown in the post appear to be some type of iron sulfide and could be pyrite, also known as fool’s gold.—Isabella Fertel, USA TODAY, 1 Feb. 2023
Share