Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Icelandite Uses. We have provided you with all information about Icelandite rock here. Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock. Icelandite is available in bluish - grey, grey, pink, yellow colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Icelandite is white. Get to know more about Icelandite rock and characteristics of Icelandite rock in the next sections.