jarosite

noun

ja·​ro·​site

jəˈrōˌsīt,

ˈjȧrəˌs-

plural -s

: an ocher-yellow or brown mineral KFe₃(SO₄)₂(OH)₆ consisting of basic sulfate of potassium and iron and occurring in minute rhombohedral crystals or in masses compare ammoniojarosite, argentojarosite, natrojarosite, plumbojarosite

Word History

Etymology

German jarosit, from Barranco Jaroso, Almería, Spain + German -it -ite

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