Sapphire Blue Granite
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Synonyms: Saphir Blue, Saphire Blue, Zephyr Blau
Location: Sapphire Blue granite is quarried near Warangal, Andhra Pradesh, Western and Eastern Ghats, India.
Description: Sapphire Blue granite is a very coarse-grained, blue-brown cordieritefels with big, brown-red feldspar phenocrysts and blue-grey quartz. 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 cordieritefel. Ideal for both interior and exterior use, Sapphire Blue granite is frost free and polish constant. The availability of Sapphire Blue granite from the quarry can be inconsistent.
A small sample of Sapphire Blue 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, Sapphire Blue granite is frost free and polish constant.
Mineral Composition: Orthoclase: 62%, Quartz: 27%, Hornblende: 5%, Biotite: 3%, Plagioclase: 2%, Mafite: 1%.
Technical and Physical Characteristics:
Compression tensile strength: 2364 kg/cm2
Tensile strength after freeze-thaw cycles: 2228 kg/cm2
Unitary modulus of bending tensile strength: 312 kg/cm2
Water imbibition coefficient: 0.001800
Mass by unit of volume: 2680 kg/m3
Cordieritefels: A phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90-100%), and a minimal mafic component (0-10%). Pyroxene, ilmenite, magnetite and olivine are the mafic minerals most commonly present.