Blue King Granite
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Synonyms: African Blue, Azul King, Blu King, Granit Blau, Sienite Blu, Sienite Blue
Location: Blue King granite is quarried in Zambia.
Description: Blue King granite is a medium-grained blue-green-white foidolite 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 foidolite.
The veining and colour varies considerably and a small sample of Blue King 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, Blue King granite is frost free and polish constant however CAUTION, contact with acid may make irreparable damge.
Technical and Physical Characteristics:
Compression tensile strength: 1776 kg/cm2
Unitary modulus of bending tensile strength: 165 kg/cm2
Heat expansion coefficient: 0,0012 mm/m°C
Impact strength: 40 cm
Mass by unit of volume: 2553 kg/m3
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.
Foidolite: A rare coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. Crystals of alkali feldspar, plagioclase, biotite, amphibole, pyroxene and/or olivine may be present within the rock.