Know all about Adakite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Adakite belongs to Igneous Rocks while Oil shale belongs to Sedimentary Rocks.Texture of Adakite is Porphyritic whereas that of Oil shale is Splintery. Adakite appears Dull and Soft and Oil shale appears Muddy. The luster of Adakite is grainy, pearly and vitreous while that of Oil shale is dull. Adakite is available in black, brown, light to dark grey colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Adakite are commemorative tablets, pottery, used in aquariums and that of Oil shale are an oil and gas reservoir.