Know all about Hornblendite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Hornblendite belongs to Igneous Rocks while Oil shale belongs to Sedimentary Rocks.Texture of Hornblendite is Banded, Foliated, Massive whereas that of Oil shale is Splintery. Hornblendite appears Foliated and Oil shale appears Muddy. The luster of Hornblendite is vitreous to dull while that of Oil shale is dull. Hornblendite is available in black, brown, green, grey colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Hornblendite are cemetery markers, commemorative tablets, creating artwork and that of Oil shale are an oil and gas reservoir.