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