LIMONIT (nem. limonit, az yun. leimon — margzor; joi nam), nomi umumii agregathoi mineralii tabiii amorfi yo nihonkristalli (mikrokristalli), ki az omekhtai gidrooksidhoi ohani sevalenta (gyotit, gidrogyotit, gidrogematit, lepidokrokit, turit) iboratand. Tarkibi khimiyavii Limonit.
HFeOa pN20 (p-to 4). Odatan agregathoi kolloidi, shushamonand, khokamonand hosil menamoyad. Rangash bur, siyoh va zardi burtob. Sakhtiash 4—5,5; anchiash 3300—4000 kg/m3, Paydoishash ekzogeni. Beshatar az vayronshavii pirit va digar sulfidhoi ohandor, siderit, slikathoi ohan va g. hosil shuda, dar shakli laterit, madanhoi botloki va g. vomekhurad. Limonit madani muhimi ohan meboshad.