Know all about Nepheline Syenite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Hyaloclastite belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Hyaloclastite is Pyroclastic. Nepheline Syenite appears Banded and Foilated and Hyaloclastite appears Dull. The luster of Nepheline Syenite is greasy to dull while that of Hyaloclastite is dull and grainy. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Nepheline Syenite and Hyaloclastite are cemetery markers, creating artwork.