Know all about Icelandite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite and Hyaloclastite belong to Igneous Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Hyaloclastite is Pyroclastic. Icelandite appears Dull and Soft and Hyaloclastite appears Dull. The luster of Icelandite is vitreous while that of Hyaloclastite is dull and grainy. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Icelandite and Hyaloclastite are cemetery markers, creating artwork.