Know all about Hornblendite and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Hornblendite belongs to Igneous Rocks while Argillite belongs to Sedimentary Rocks.Texture of Hornblendite is Banded, Foliated, Massive whereas that of Argillite is Clastic, Polished. Hornblendite appears Foliated and Argillite appears Rough and Dull. The luster of Hornblendite is vitreous to dull while that of Argillite is waxy and dull. Hornblendite is available in black, brown, green, grey colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Hornblendite are cemetery markers, commemorative tablets, creating artwork and that of Argillite are fire resistant, used to manufracture paperweights and bookends.