Know all about Oil shale and Dacite properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale belongs to Sedimentary Rocks while Dacite belongs to Igneous Rocks.Texture of Oil shale is Splintery whereas that of Dacite is Aphanitic to Porphyritic. Oil shale appears Muddy and Dacite appears Vesicular. The luster of Oil shale is dull while that of Dacite is subvitreous to dull. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Dacite is available in bluish - grey, brown, grey, light to dark grey colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Dacite are commemorative tablets, creating artwork.