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