Coal vs Obsidian 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. Coal vs Obsidian characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Coal and Properties of Obsidian. Learn more about Coal vs Obsidian in the next section. The interior uses of Coal include Not yet used whereas the interior uses of Obsidian include Decorative aggregates and Interior decoration. Due to some exceptional properties of Coal and Obsidian, they have various applications in construction industry. The uses of Coal in construction industry include Cement manufacture, For road aggregate, Making natural cement, Steel production and that of Obsidian include Arrowheads, Cutting tool, Knives, Scrapers, Spear points.
More about Coal and Obsidian
Here you can know more about Coal and Obsidian. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Coal and Obsidian consists of mineral content and compound content. The 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 and mineral content of Obsidian is not available. You can also check out the list of all Sedimentary Rocks. When we have to compare Coal vs Obsidian, the texture, color and appearance plays an important role in determining the type of rock. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas, Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. Appearance of Coal is Veined or Pebbled and that of Obsidian is Shiny. Properties of rock is another aspect for Coal vs Obsidian. The hardness of Coal is 1-1.5 and that of Obsidian is 5-5.5. The types of Coal are Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite whereas types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Coal is black while that of Obsidian is white. The specific heat capacity of Coal is 1.32 kJ/Kg K and that of Obsidian is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Coal is heat resistant whereas Obsidian is heat resistant, impact resistant.