Commercial name: Four Seasons GranitePetrographic Classification (Scientific Name): Mylonitic biotite granite gneiss Test Value Obtained Standard Deviation Reference standards Apparent dry density 2.721 kg/m? 11 ASTM C-97; ABNT-NBR 12766/92 Apparent porosity 0,37 % 0,03 ASTM C-97; ABNT-NBR 12766/92 Water absorption 0,14 % 0,01 ASTM C-97; ABNT-NBR 12766/92 Abrasion wear (Amsler) 0,38 mm (500 m)0,74 mm (1000 m) - ABNT-NBR 12042/90 Linear thermal dilation coefficient 6,8 x 10-3 mm/m