Bianco Cristal Granite
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Synonyms: Bianco Cristall, Bianco Cristallo, Bianco Crystall, Bianco Kristall, Blanc Cristal, Blanco Cristal, Blanco Crystal, Blanco Crystall, Branco Cristal, White Cristal
Location: Bianco Cristal granite is quarried near Cadalso de los Vidrios, Madrid, Spain.
Description: Bianco Cristal granite is a medium-grained, light grey-white muscovite granite of the Carboniferous period. This stone internationally may be nominated as a granite and in the area of application of the European Standard this stone must be nominated as granite.
A small sample of Bianco Cristal granite is usually representative not having a wide variation in colour and veining. 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 however Bianco Cristal granite colours may change from white into yellow. This is caused by the transformation of biotite into limonite in mostly blocks in the upper layers of the quarry.
Mineral Composition: Average by %: Quartz, Orthoclase, Plagioclase, Biotite; Secondary Minerals: Chlorite, Muskovite, Zircone, Sericite
Granite: Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granites are usually medium to coarse grained, occasionally with some individual crystals larger than the groundmass forming a rock known as porphyry. Granites can be pink to dark grey or even black, depending on their chemistry and mineralogy.