Know all about Appinite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Appinite and Icelandite belong to Igneous Rocks.Texture of Appinite is Porphyritic whereas that of Icelandite is Aphanitic to Porphyritic. Appinite appears Dull, Banded and Foilated and Icelandite appears Dull and Soft. The luster of Appinite is subvitreous to dull while that of Icelandite is vitreous. Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner and that of Icelandite are cemetery markers, creating artwork.