KnowraUltramafic rockLinked fromLinked fromThe 6 pages that link to Ultramafic rock, each with the reason it gives.All 6Related 2Narrower topic 4Mohorovičić discontinuityRelated: Mantle-like rocks near the boundary complicate simple crust–mantle compositional interpretations.TalcRelated: Its magnesium-rich composition supplies a common starting material for talc formation.