31. Carbonatite melts are often considered to have been responsible for enrichment of mantle peridotite in incompatible elements. 32. Pyrope is common in peridotite xenoliths from kimberlite pipes, some of which are diamond-bearing. 33. In turn, peridotite is a coarse-grained igneous rock formed very deep inside the earth. 34. Within the rugged terrain serpentinized peridotite and gabbro are capped with a thin layer of extrusive basalt. 35. Harzburgite typically forms by the extraction of partial melts from the more pyroxene-rich peridotite called lherzolite. 36. Material of rhyolitic composition prevails, but tholeiitic basalts, rare peridotites and carbonate lenses do also occur. 37. The park includes two biomes typical of New Caledonia : maquis shrubland overlying peridotite rock and tropical rainforest. 38. The Josephine peridotite was a source of valuable chromium ore, mined in the region between 1917 and 1960. 39. The word " peridotite " comes from the gemstone peridot, which consists of pale green olivine. 40. Peridotites associated with Alaskan-type ultramafic complexes are cumulates that probably formed in the root zones of volcanoes.
