Know all about Argillite and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Hawaiite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Argillite appears Rough and Dull and Hawaiite appears Dull and Soft. The luster of Argillite is waxy and dull while that of Hawaiite is not available. Argillite is available in dark grey to black, pink, red, white colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Hawaiite are creating artwork, sea defence.