Know all about Nephelinite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite belongs to Igneous Rocks while Oil shale belongs to Sedimentary Rocks.Texture of Nephelinite is Aphanitic whereas that of Oil shale is Splintery. Nephelinite appears Skeletal and Oil shale appears Muddy. The luster of Nephelinite is vitreous to metallic while that of Oil shale is dull. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Oil shale are an oil and gas reservoir.