Know all about Icelandite and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite belongs to Igneous Rocks while Arkose belongs to Sedimentary Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Arkose is Clastic. Icelandite appears Dull and Soft and Arkose appears Rough and Dull. The luster of Icelandite is vitreous while that of Arkose is dull. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Arkose is available in reddish brown colors. The commercial uses of Icelandite are cemetery markers, creating artwork and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.