Know all about Nepheline Syenite and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite belongs to Igneous Rocks while Coal belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Coal is Amorphous, Glassy. Nepheline Syenite appears Banded and Foilated and Coal appears Veined or Pebbled. The luster of Nepheline Syenite is greasy to dull while that of Coal is dull to vitreous to submetallic. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.