Recent Examples on the WebRed areas are due to rust mixtures, yellows are due to iron sulfide, purples are from goethite or oxidized limonite, and the greens come from chlorite. Stacey Leasca, Travel + Leisure, 12 May 2022 The small black patches of iron sulfide are also found as inclusions in octahedrites. Jennifer Ouellette, Ars Technica, 23 Feb. 2022 Pyrite, also known as fool's gold, is an iron sulfide mineral used in the paper and jewelry industries. Reuters, CNN, 23 Nov. 2021 Hydrated minerals called phyllosilicates, for instance, will appear in the red, while troilite, an iron sulfide mineral, will show up in the violet. Sarah Scoles, Wired, 17 Aug. 2021 Most copper comes from chalcopyrite, a copper-iron sulfide mineral. David Bressan, Forbes, 4 July 2021 Electricity and electrolytes effectively rearrange the surface chemistry of the iron sulfide. Caroline Delbert, Popular Mechanics, 31 July 2020 The University of Minnesota team had separately been researching ways to try and make new kinds of solar panels out of sulfur and iron sulfide materials, Leighton said.Fox News, 31 July 2020 That rain could consist of compounds such as iron sulfide or iron hydride. Mike Wall, Scientific American, 12 Mar. 2020 See More