Know all about Anthracite and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Rhomb Porphyry belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Anthracite appears Veined or Pebbled and Rhomb Porphyry appears Rough. The luster of Anthracite is shiny while that of Rhomb Porphyry is subvitreous to dull. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo).