Examples of iron sulfide in a Sentence
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More strikingly, scientists recently reported signs of vivianite (an iron phosphate) and greigite (an iron sulfide).
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Sharmila Kuthunur, Space.com, 3 Oct. 2025
These spots are concentric reaction fronts – places where chemical and physical reactions occur – enriched in the minerals vivianite, which contains iron phosphate, and greigite, which is made of iron sulfide.
—Amy J. Williams, The Conversation, 12 Sep. 2025
The features are likely due to the presence of ferrous iron phosphate and iron sulfide, or the minerals vivianite and greigite, according to the researchers.
—Ashley Strickland, CNN Money, 10 Sep. 2025
Perseverance’s measurements suggested the speckles contained the minerals vivianite, an iron phosphate, and greigite, an iron sulfide—and that both formed in close association with organic carbon.
—Humberto Basilio, Scientific American, 9 Sep. 2025
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
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
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Sharmila Kuthunur, Space.com, 3 Oct. 2025
These spots are concentric reaction fronts – places where chemical and physical reactions occur – enriched in the minerals vivianite, which contains iron phosphate, and greigite, which is made of iron sulfide.
—Amy J. Williams, The Conversation, 12 Sep. 2025
The features are likely due to the presence of ferrous iron phosphate and iron sulfide, or the minerals vivianite and greigite, according to the researchers.
—Ashley Strickland, CNN Money, 10 Sep. 2025
Perseverance’s measurements suggested the speckles contained the minerals vivianite, an iron phosphate, and greigite, an iron sulfide—and that both formed in close association with organic carbon.
—Humberto Basilio, Scientific American, 9 Sep. 2025
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
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
Cite this Entry
“Iron sulfide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iron%20sulfide. Accessed 4 Dec. 2025.
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