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Definition of "jarosite" []

  • A mineral with rhombohedral crystals, KFe33+(SO4)2(OH)6. (noun)

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Use "jarosite" in a sentence
  • "Expedition leader Professor Groemer, who is based at the University of Innsbruck in Austria, explains: "We have a mineral here called jarosite - and that is exactly what we have on Mars.""
  • "Orange layers are colored by jarosite, an iron-rich sulfate mineral."
  • "From 176 to 180 feet, samples indicated limonite-jarosite and hematite in the matrix material and it is believed that this zone could also offer gold mineralization."