Know all about Carbonatite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Carbonatite and Nephelinite belong to Igneous Rocks.Texture of Carbonatite is Granular, Poikiloblastic whereas that of Nephelinite is Aphanitic. Carbonatite appears Dull, Banded and Foilated and Nephelinite appears Skeletal. The luster of Carbonatite is subvitreous to dull while that of Nephelinite is vitreous to metallic. Carbonatite and Nephelinite are available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Carbonatite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).