pyrite
noun
py·rite ˈpī-ˌrīt 
: a common mineral that consists of iron disulfide, has a pale brass-yellow color and metallic luster, and is burned in making sulfur dioxide and sulfuric acid
Example Sentences
Recent Examples on the Web The mineral world's champion of diverse origins is the humble pyrite (FeS2), known by many as Fool's Gold. 
David Bressan, Forbes, 2 July 2022 And Mary and Jesus are given natural (if irregular) halos by glimmering gold pyrite specks in the lapis. Judith H. Dobrzynski, WSJ, 12 Mar. 2022 If anyone tried to tamper with the master image (by, say, transforming the pyrite of a stringy-haired goatee guy into the gold of an alien), a skeptic could double-check the image by running it through that algorithm. Sandra Upson, Wired, 11 Nov. 2021 The tunnel’s walls were decorated with pyrite, or fool’s gold, which reflected firelight to create the illusion of a sky dotted with stars. Livia Gershon, Smithsonian Magazine, 26 Aug. 2021 Geology has found tiny amounts of gold can be trapped inside pyrite. David Bressan, Forbes, 27 June 2021 The company dumped iron pyrite cylinders into the marsh and later manufactured fertilizers, herbicides and pesticides. Bob Egelko, SFChronicle.com, 5 Jan. 2021 The company dumped iron pyrite cinders into the marsh and later manufactured fertilizers, herbicides and pesticides there. Sarah Ravani, SFChronicle.com, 15 Dec. 2020 The company dumped iron pyrite cinders into the marsh and later manufactured fertilizers, herbicides and pesticides there. Sarah Ravani, SFChronicle.com, 15 Dec. 2020 See More
David Bressan, Forbes, 2 July 2022 And Mary and Jesus are given natural (if irregular) halos by glimmering gold pyrite specks in the lapis. Judith H. Dobrzynski, WSJ, 12 Mar. 2022 If anyone tried to tamper with the master image (by, say, transforming the pyrite of a stringy-haired goatee guy into the gold of an alien), a skeptic could double-check the image by running it through that algorithm. Sandra Upson, Wired, 11 Nov. 2021 The tunnel’s walls were decorated with pyrite, or fool’s gold, which reflected firelight to create the illusion of a sky dotted with stars. Livia Gershon, Smithsonian Magazine, 26 Aug. 2021 Geology has found tiny amounts of gold can be trapped inside pyrite. David Bressan, Forbes, 27 June 2021 The company dumped iron pyrite cylinders into the marsh and later manufactured fertilizers, herbicides and pesticides. Bob Egelko, SFChronicle.com, 5 Jan. 2021 The company dumped iron pyrite cinders into the marsh and later manufactured fertilizers, herbicides and pesticides there. Sarah Ravani, SFChronicle.com, 15 Dec. 2020 The company dumped iron pyrite cinders into the marsh and later manufactured fertilizers, herbicides and pesticides there. Sarah Ravani, SFChronicle.com, 15 Dec. 2020 See More Word History
Etymology
Latin pyrites
First Known Use
1741, in the meaning defined above
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