Know all about Marl and Hornblendite properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Hornblendite belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Hornblendite is Banded, Foliated, Massive. Marl appears Rough and Dull and Hornblendite appears Foliated. The luster of Marl is dull while that of Hornblendite is vitreous to dull. Marl is available in beige, brown, green, grey, white colors whereas Hornblendite is available in black, brown, green, grey colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Hornblendite are cemetery markers, commemorative tablets, creating artwork.