Viskont White Granite
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Synonyms: Bianco Viscont White, Madanapalle, Madanapalle White, Madanapalli White, Mandana Palli White, Viscon White, Viscont White, Wiscont White, Visconte White, Viscount White Granite, Viscount-White, Viskont, Viskont White, Wiscount White, Wiskont White
Location: Viskont White granite is quarried near Madanapalle, Andhra Pradesh and Tiruchirappalli, Tamil Nadu, India
Description: Viskont White granite is a fine-grained, grey-white to nearly white gneiss (paragneiss) of the Precambrian period sometimes with heavy darker veins. 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.
The veining and colour varies considerably and a small sample of Viskont White granite may not be representative of the whole slab therefore swatch samples must be approved for large projects to ensure that the blocks are all extracted from the same quarry face for matching purposes. Ideal for both interior and exterior use, Viskont White granite is frost free and polish constant.
Technical and Physical Characteristics:
Compression tensile strength: 2080 kg/cm2
Tensile strength after freeze-thaw cycles: 1990 kg/cm2
Unitary modulus of bending tensile strength: 132 kg/cm2
Heat expansion coefficient: 0.0065 mm/m°C
Water imbibition coefficient: 0.004000
Mass by unit of volume: 2620 kg/m3
Gneiss: A common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Gneissic rocks are usually medium to coarse-foliated and largely recrystallized but do not carry large quantities of micas, chlorite or other platy minerals. Gneisses that are metamorphosed igneous rocks or their equivalent are termed granite gneisses, diorite gneisses, etc.