Blue Antique® #7
Blue Antique® is slightly different to our other granite stones, with its unique warm brown colour, and blue and turquoise crystals. Blue Antique® can be cut in any direction, as crystals and colouring are strong and evenly spread, meaning that first choice materials can be sourced from second and third choice blocks.
The Blue Antique #7 quarry
At our Blue Antique® quarry #7 in Egersund we are producing on several levels securing future supplies. Due to the characteristics of the deposit, we have a substantial production of large blocks in second and third choice.
Location: Egersund, Norway
Blue Antique quarry #7 is a magmatic plutonic rock, anorthosite.
- Key minerals: Plagioclase
- Accessory minerals: Pyroxene, amphibole, biotite, quartz
- Geological age: Precambrian (1.3 billion years)
- Chemical analysis: SiO2 (54,64), TiO2 (0,12%), Al2O3 (26,89%), Fe2O3 (0,65%), FeO (0,58%), MnO (0,01%), MgO (1,03%), CaO (10,8%), Na2O (5,19%), K2O (0,34%), P2O5 (0,07%), H2O (0,05%), H2O+ (0,3%)
|Petrographic classification||Mean value + /- standard deviation|
|Apparent Density||EN 1936||2.685 ± 4,2 kg/m³|
|Porosity||EN 1936||0,5 ± 0 vol%|
|Water absorption||EN 13755||0,2 massa%|
|Flexural Strength||EN 12372||11,9 ± 2 MPa (E- = 8,5 MPa)|
|Compressive Strength||EN 1926||153 ± 22 MPa (E- = 112 MPa)|
|Wear resistance||EN 14157||18,5 mm (E+ = 18,5 mm)|
|Frost resistance||EN 12371||Frost resistant (>168 cycles)|