Gneiss vs Coal Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Gneiss vs Coal characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Gneiss and Properties of Coal. Learn more about Gneiss vs Coal in the next section. The interior uses of Gneiss include Countertops, Decorative aggregates, Flooring and Interior decoration whereas the interior uses of Coal include Not yet used. Due to some exceptional properties of Gneiss and Coal, they have various applications in construction industry. The uses of Gneiss in construction industry include As dimension stone and that of Coal include Cement manufacture, For road aggregate, Making natural cement, Steel production.
More about Gneiss and Coal
Here you can know more about Gneiss and Coal. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Gneiss and Coal consists of mineral content and compound content. The mineral content of Gneiss includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon and mineral content of Coal includes Analcime, Apatite, Barite, Calcite, Chalcopyrite, Chlorite, Chromite, Clausthalite, Clay Minerals, Crandallite Group, Dolomite, Feldspar, Galena, Gypsum, Marcasite, Muscovite or Illite, Pyrite, Quartz, Siderite, Sphalerite, Zircon. You can also check out the list of all Metamorphic Rocks. When we have to compare Gneiss vs Coal, the texture, color and appearance plays an important role in determining the type of rock. Gneiss is available in black, brown, pink, red, white colors whereas, Coal is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Gneiss is Foliated and that of Coal is Veined or Pebbled. Properties of rock is another aspect for Gneiss vs Coal. The hardness of Gneiss is 7 and that of Coal is 1-1.5. The types of Gneiss are Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss. whereas types of Coal are Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Gneiss is white while that of Coal is black. The specific heat capacity of Gneiss is Not Available and that of Coal is 1.32 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Gneiss is heat resistant, pressure resistant, scratch resistant, wear resistant whereas Coal is heat resistant.