Know all about Mugearite and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Mugearite belongs to Igneous Rocks while Coal belongs to Sedimentary Rocks.Texture of Mugearite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Coal is Amorphous, Glassy. Mugearite appears Dull and Soft and Coal appears Veined or Pebbled. The luster of Mugearite is not available while that of Coal is dull to vitreous to submetallic. Mugearite is available in black, brown, light to dark grey colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Mugearite are creating artwork and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.