Raterron, PaulChopra, PrameDoukhan, Jean-Claude2015-12-130012-821Xhttp://hdl.handle.net/1885/89244Two natural dunites were annealed at pressure P = 300 MPa, temperature T = 1373, 1473 and 1573 K, and fO2 within the stability field of olivine. The starting materials contained small amounts of hydroxyls in the form of minor phases of hydrated minerals,Keywords: dunite; exsolution; metamorphism; olivine; precipitation (chemistry); silica Dunite; Exsolution; Olivine; Point defects; Precipitation; Silica; Transmission electron microscopy; Ultramafic composition; Xenoliths200010.1016/S0012-821X(00)00160-62015-12-12