Bianco Regina Granite
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Synonyms: Branco Caravelas, Macroponto, Regina White, Serra Branca, Serra White, Sierra Blanca
Location: Bianco Regina granite is quarried at quarry RN 000053, Fazenda Cordilheira, Medeiros Neto, Bahia, Brazil.
Description: Bianco Regina granite is a medium-grained, light grey granulite with garnets ranging from grey to dark green and bordeaux. 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 granulite.
A small sample of Bianco Regina granite is usually representative not having a wide variation in colour and veining however 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, Bianco Regina granite is frost free and polish constant.
Mineral Composition: Mesoperthitic Feldspar: 53%, Quartz: 30%, Plagioclase: 7%, Garnet: 5%, Cordierite: 3%, Sillimanite: 2%
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
Granulite: Granulites are metamorphic rocks that have experienced high temperatures of metamorphism. They typically have a granular (granoblastic) texture that is, a texture comprised of similarly sized and shaped grains and hence the name granulite.