Peridotite has undergone strong serpentinization and was completely replaced by serpentinite, but the pseudomorph of olivine and orthopyroxene still are preserved.

橄榄岩虽然发生强烈蛇纹岩化（现在为蛇纹岩），但蛇纹岩中保留斜方辉石和橄榄石的假象。