单词	carbonatite
释义	carbonatite /kɑːˈbɒnətʌɪt / noun Geology A lava or other igneous rock composed chiefly of carbonates rather than silicates: unusual magmas such as carbonatites [mass noun]: carbonatite is rich in calcium carbonate... Next in abundance, although rare in comparison to silicate rocks, are carbonate-based magmas and lavas known as carbonatites, which have little (less than 15 per cent by weight) or no silica content. Indeed, pegmatites from gabbros to granites to carbonatites to anorthosites are known. It consists of gabbroic, ultramafic and alkaline rocks, mafic dyke swarms and carbonatites.
随便看	Renaissancist renaissant renal renal calculus renal colic renal corpuscle renal dialysis renal dwarfism renal infantilism renal osteodystrophy renal papilla renal pelvis renal portal vein renal rickets rename Renan, Ernest renardine renardite renascence renascent renationalise renationalization renationalize renaturable renaturation

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