Imperial White Granite
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Synonyms: Bianco Imperial White, Tippo White, Tippu White, Tipu White
Location: Imperial White granite is quarried near Edapadi, Salem, Eastghats, West and Eastghats, Tippu, Chennai, Tamil Nadu, India. There are several different quarries of Imperial White Granite all varying in shade and veining.
Description: Imperial White granite is a white, partly light pink gneiss of the Precambrian period. This stone internationally may be nominated as a granite but in the area of application of the European Standard this stone must be nominated as a gneiss. Ideal for both interior and exterior use, Imperial White granite is frost free and polish constant.
Technical and Physical Characteristics:
Compression tensile strength: 2051 kg/cm2
Tensile strength after freeze-thaw cycles: 1761 kg/cm2
Unitary modulus of bending tensile strength: 116 kg/cm2
Heat expansion coefficient: 0.0062 mm/m°C
Water imbibition coefficient: 0.003500
Mass by unit of volume: 2603 kg/m3
Gneiss: A high grade metamorphic rock. This means that gneiss has been subjected to more heat and pressure than schist. Gneiss is coarser than schist and has distinct banding. This banding has alternating layers that are composed of different minerals. The minerals that compose gneiss are the same as granite. Feldspar is the most important mineral that makes up gneiss along with mica and quartz. Gneiss can be formed from a sedimentary rock such as sandstone or shale, or it can be formed from the metamorphism of the igneouse rock grantite. Gneiss can be used by man as paving and building stone.