Tropic Brown Granite
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Synonyms: Beir Askar, Bis Askar, Bir Askar Brown, Falcon Brown, Havana Braun, Najaran Brown, Najran Brown, Najren Brown, Najron Brown, Naranja Brown, Nayarin Brown, Tropical Brown
Location: Tropic Brown granite is quarried near Bir Askar, 50 km W Najran, Saudi Arabia, near to the border of Yemen.
Description: Tropic Brown granite is a medium-grained, brown granite of the Precambrian 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 a granite. Ideal for both interior and exterior use, Tropic Brown granite is frost free and polish constant. There are several quarries of Tropic Brown granite therefore for large projects and matching ensure all the raw material comes from the same quarry.
Technical and Physical Characteristics:
Compression tensile strength: 2326 kg/cm2
Tensile strength after freeze-thaw cycles: 2181 kg/cm2
Unitary modulus of bending tensile strength: 143 kg/cm2
Heat expansion coefficient: 0.0050 mm/m°C
Water imbibition coefficient: 0.001300
Impact strength: 82 cm
Frictional wear: 0.70
Mass by unit of volume: 2540 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.