Peridotit (az frans. peridot — peridot yo olivin), jinsi kuhii intruzivii ultraasosi, ki goliban az olivin (70—30%) va piroksenho (30—70%) tarkib yoftaast. Az mineralhoi duyumdaraja magnetit, ilmenit, pirrotin, khromit, shpinel, bechoda, bazan platina va mineralhoi nikeldor dorad.
Peridotit jinsi tirarang buda, aksar sabz yo khokistarrangi sabztob ast. Dar natijai prosesshoi serpentinizatsiya (tagyirothoi postmagmavi) Peridotit ba serpentinit (zmeevik) tabdil meyobad. Peridotit yakjoya bo digar jinshoi kuhii asosiyu ultraasosi mintaqa va zonahoi kalonro tashkil medihad. Dar in mintaqayu zonaho aksar konhoi khromit, platina, nikel, khrizotil-asbest, talq va digar sarvathoi zerizamini yoft meshavand.