Marbles & Granite – Value adding Rocks !
Granite is a common and widely-occurring group of intrusive felsic igneous rocks that form at great depths and pressures under continents having similar textures and slight variations in composition and origin. It is granular and phaneritic in texture. The word ‘granite’ comes from the Latin word ‘granum’, a grain in reference to the coarse grain structure of such a hollow crystalline rock. Granite can be predominantly white, pink or gray in color, depending on their mineralogy. Granite is a very hard, massive, though, granular, crystalline igneous rock which consists mainly of quartz, mica, and feldspar and has gained widespread use throughout humanity and more recently as a construction stone.
Major Granite deposition Location : This hard, coarse-grained rock makes up a large part of every continent. In India almost all of South India has good quality granite deposit.
Application : Polished granite slabs have achieved a special status as building stones throughout the world and commonly used today as one of the major fancy construction material. Available in wide spectrum of colors, granite stones are used in flooring, kitchen tops, etc;
Marble is a non-foliated metamorphosed limestone, composed of recrystallized pure calcite or dolomite (a crystalline form of calcium carbonate, CaCO3). It is extensively used for sculpture, as an building material, and in many other applications. It is a hard crystalline metamorphic form of limestone, typically white with colored mottling or streaks, which may be polished or is used in sculpture and architecture. Marble dust can be combined with cement or synthetic resins to make reconstituted or colored marble. The word marble derives from Greek marmaros ‘shining stone’.
Major Marble deposition Location : Marble is found in many countries, including Belgium, France, Great Britain, Greece, India, Italy, and Spain.
Application : Since time immemorial, marble slabs and marble tiles have been used in temples, mosques, palaces, and homes. Marble is the most popular ornamental and decorative stone because of its pleasing colors, attractive patterns and designs. It takes good polish, popularly used as wall claddings, floors, skirting, table tops, treads and risers, sculptures, artefacts, etc;
Differences between marbles and granite :
|Definition||A hard crystalline metamorphic form of limestone, typically white with coloured mottles or streaks, which may be polished and is used in sculpture and architecture||A very hard, granular, crystalline, igneous rock consisting mainly of quartz, mica, and feldspar and often used as a building stone|
|History||Marble is a rock resulting from metamorphism of sedimentary carbonate rocks, most commonly limestone or dolomite rock. Metamorphism causes variable re-crystallization of the original carbonate mineral grains. The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals.|
|Word origin||The word marble was originated from Middle English: via Old French (variant of marbre), from Latin marmor, from Greek marmaros ‘shining stone’, associated with marmarin ‘to shine’.||The word granite was originated from Mid 17th century: from Italian granito, literally ‘grained’, from grano ‘grain’, from Latin granum.|
|Durability||It is less durable.||It is durable.|
|Resistant||It is not resistant to acidic foods.||It is mostly resistant to acidic foods.|
|Scratch resistant||It is not scratch resistant.||It is mostly scratch resistant.|
|Strains||It is not prone to stains as granites.||It is little prone to stains.|
|Hardness||It is comparatively less hard and strong.||It is much harder and stronger than marble.|
|Advantages||1)Placing hot items or cutting on it will never damage the surface.
2)Once sealed, it is stain resistant
4)The various minerals within it add depth and character making every granite top different.
5)The colour will never fade
6)Adds value to your home
|Disadvantages||Granite needs to be sealed once every 2 years|
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