Negro Calatorao is a deep black background with white veins and rusty golden hues; Jurassic era sedimentary rock quarried in Spain. This stone is especially good for Exterior - Interior wall and floor applications, countertops, mosaic, fountains, pool and wall cappi and other design projects. It also called Black Calatorao Marble,Calatorao Black Marble,Piedra Negra de Calatorao,Calatorao,Piedra Calatorao,Negro Calatorao,Piedra de Calatorao,Piedra de Calatorao Limestone,Negro Calatorao Limestone, Negro Calatorao Marble . Negro Calatorao can be processed into Polished, Sawn Cut, Sanded, Rockfaced, Sandblasted, Tumbled and so on.
SpainNegro Calatorao Marble is a deep black background with white veins and rusty golden hues; Jurassic era sedimentary rock.
The town of Calatorao Zaragoza, in the region of Valdejalón, enjoys the presence in the vicinity of what is traditionally known as "Piedra Negra de Calatorao".
The use of these quarries is longstanding. The first known works date back to the Arab period; although they may have been already exploited during the time when the Romans occupied these lands. Later the Negro Calatorao Marble has been used in many buildings, monuments, streets, squares, etc. This is Jurassic era formations formed almost exclusively by black limestone which, thanks to good polishing they acquire, are highly prized as marble decor.
Adsorption (UNE-EN 13755: 2002) 0.6%
Specific gravity (UNE 22182: 1985) 2.63
Flexural strength (UNE-EN 12372: 1999) 20.2 MPa
Frosting (mean resistance index H) (UNE 22-184-85) 0.01%
Compressive strength (UNE-EN 1926: 1999) 151.9 MPa
Resistance to abrasion (UNE 22-183-85) 0.4 mm
Knoop microhardness (UNE 22-188-85) 1.914 MPa
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