● carbonatite nom féminin Roche magmatique, composée essentiellement de carbonates de calcium, de magnésium et associée aux syénites néphéliniques. (Les carbonatites constituent souvent des gisements de terres rares.)
Encyclopédie Universelle. 2012.
Carbonatite — Carbonatites (pronEng|kɑrˈbɒnətaɪt) are intrusive or extrusive igneous rocks defined by mineralogy that comprises more than 50 volume % carbonate minerals. Carbonatites may be confused with marble, and may require geochemical… … Wikipedia
Carbonatite — Hornito de carbonatite dans le cratère de l Ol Doinyo Lengaï, Tanzanie … Wikipédia en Français
carbonatite — /kahr bon euh tuyt /, n. a calcitic or dolomitic carbonate rock emplaced as an igneous intrusion. [CARBONATE + ITE1] * * * … Universalium
carbonatite — noun Any intrusive igneous rock having a majority of carbonate minerals … Wiktionary
carbonatite — [kα: bɒnətʌɪt] noun Geology a lava or other igneous rock composed chiefly of carbonates … English new terms dictionary
carbonatite — car·bon·a·tite … English syllables
carbonatite — kärˈbänəˌtīt noun ( s) Etymology: carbonate (I) + ite : a carbonate rock of intrusive origin … Useful english dictionary
Mount Weld — is a mountain and a mine site in Western Australia, located about 30 km south of Laverton and 120 km east of Leonora.[1] It ranks as one of the richest major rare earth deposits in the world.[2] Rare earths are contained in secondary… … Wikipedia
Bastnäsite — Infobox mineral name = Bastnäsite category = Carbonate mineral boxwidth = boxbgcolor = imagesize = caption = formula = (Ce,La,Y)CO3F molweight = color = Honey yellow, reddish brown habit = Tabular to equant striated crystals, also granular,… … Wikipedia
Doinyo Lengai — Ol Doinyo Lengaï Ol Doinyo Lengaï L Ol Doinyo Lengaï vu depuis le lac Natron. Géographie Altitude 2 960 m … Wikipédia en Français
