Giallo Veneziano Granite
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Synonyms: Amarelo Venecia, Amarelo Veneciano, Amarelo Veneziano, Giallo Venecciano, Giallo Venecia, Giallo Veneciano, Giallo Venetano, Giallo Venetiano, Giallo Venezia, Giallo Veniziano, Gialo Veneziano, Gold-Granit, Golden Granit, Golden Venecia, Juparana Venecia, Juparana Venezia, Juperana Venezia, Korall Gelb, Venecia Amarelo, Venetian Gold, Venezia Amarelo, Yellow Venezia
Location: Giallo Veneziano granite is quarried at quarry RN 000232, Zona di Pipinuque, Corrego de Agua Preta, Nova Venecia, Espirito Santo, Brazil.
Description: Giallo Veneziano granite is a medium to coarse-grained, ochre-yellow to golden-brown, also light pink gneiss (pegmatitic orthogneiss) of the Precambrian period, with biotite and garnet. 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 and a small sample of Giallo Veneziano 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, Giallo Veneziano granite is frost free and polish constant.
Mineral Composition: Microperthitic Microcline: 45%, Quartz: 30%, Oligoclase: 16%, Biotite: 5%, Accessories: 4%.
Technical and Physical Characteristics:
Compression tensile strength: 1675 kg/cm2
Tensile strength after freeze-thaw cycles: 1649 kg/cm2
Unitary modulus of bending tensile strength: 105 kg/cm2
Heat expansion coefficient: 0.0076 mm/m°C
Water imbibition coefficient: 0.001900
Mass by unit of volume: 2574 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.