Marl vs Coal

Marl vs Coal Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Marl and Coal Reserves. Marl is an unconsolidated sedimentary rock consisting of clay and lime. Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Marl vs Coal information and Marl vs Coal characteristics in the upcoming sections.

Marl 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. Marl vs Coal characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Marl and Properties of Coal. Learn more about Marl vs Coal in the next section. The interior uses of Marl include Decorative aggregates and Floor tiles whereas the interior uses of Coal include . Due to some exceptional properties of Marl and Coal, they have various applications in construction industry. The uses of Marl in construction industry include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar and that of Coal include Cement manufacture, For road aggregate, Making natural cement, Steel production.

More about Marl and Coal

Here you can know more about Marl and Coal. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Marl and Coal consists of mineral content and compound content. The mineral content of Marl includes Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz 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 Sedimentary Rocks. When we have to compare Marl vs Coal, the texture, color and appearance plays an important role in determining the type of rock. Marl is available in beige, brown, green, grey, white colors whereas, Coal is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Marl is Rough and Dull and that of Coal is Veined or Pebbled. Properties of rock is another aspect for Marl vs Coal. The hardness of Marl is 2-3 and that of Coal is 1-1.5. The types of Marl are Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl 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 Marl is white while that of Coal is black. The specific heat capacity of Marl is 0.80 kJ/Kg K 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.Marl is heat resistant, impact resistant whereas Coal is heat resistant.