Cougan Green Granite
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Synonyms: Green Cougan
Location: Cougan Green granite is quarried in Brazil.
Description: Cougan Green granite is medium-grained, with a black-green background and large, multicoloured groundmass pieces similar to a natural conglomerate. This stone internationally may be nominated as a granite but in the area of application of the European Standard we are awaiting clarification.
The veining and colour varies considerably and a small sample of Cougan Green 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, Cougan Green granite is frost free and polish constant.
Compression tensile strength: 1920 kg/cm2
Tensile strength after freeze-thaw cycles: 1810 kg/cm2
Water imbibition coefficient: 0,001500
Mass by unit of volume: 2720 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.