Black - Slate
Quarry Location: Cicagna, Lorsica, Moconesi, Comune di Orero, Val Fontabuona, Provincia di Genova, Liguria
Water Absorption: 0.39 By weight %, 1.1 By volume %
Density: 2715 Kg/m³
Flexural Strength: 56.9 - 58.0 MPa
Compressive Strength: 130.0 - 146.7 MPa
Recommended Usage: Building stone, roof tiles, countertops, sinks, monuments, pool coping, sills, ornamental stone, int
Finishing Surface: Sawn Cut, Sanded, Rockfaced, Sandblasted, Bushhammered, Tumbled, Thermalled, Natural Cleft, Weatheredge
Additional Names: Ardesia Fontana Buona, Fontanabuona, Fontana Buona, Original Italian Slate, Pierre d'Italie Slate, Ardesia Fontanabuona
Petrographic definition: slate
Massa Unit Volume: 2715 kg/m3
Water Absorption: 0.39 %
Breaking Load Compression Simple: 147 MPa
Compression breaking load after freezing: 130 MPa
Tensile Strength through indirect Flex: 57.3 MPa
Its coefficient of Abrasion (referred to Granite St. Fedelino): 0.37
Impact resistance: minimum fall height: 94 cm
Linear thermal expansion coefficient of 6.6 x 10-5 0C-1
Knoop microhardness: 882.9 MPa
Index unevenness of hardness: 1.31
Source: Università di Pisa - Politecnico di Torino