Nuvolato Apuano

Nuvolato Apuano
quarry of origin


Carrara, Italy
Petrografic name (according EN 12407): Marble
Macroscopic description: An aphanitic, compact dark grey lithotype with a cloudy appearance due to the presence of lighter-coloured flames and patches on a dark background. Abundant darkish veins occur that are submillimetric in size with a parallel orientation. These are very close to one another in places and anastomosed, forming dark grey sub centimetric bands. There are rare plurimillimetric sub rounded patches that are also dark grey in colour. The material has no surface porosity.
Technical data provides a frame of reference only. As stone is a product of nature, up to date testing to determine specific physical qualities should be repeated for each major project. We decline any responsability for the mis-use of this data, since said data is sourced from the quarry.
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Physical mechanical characteristics
EN 13755-08 Water absorption at atmospheric pressure % 0,15 0,02
EN 1936-07 Apparent Density KG/m3 2700 0
EN 1936-07 Open porosity % 0,4 0,04
EN 12372-07 Flexural strength
  (in natural conditions) MPa 13,5 1,4
  (EN 12371-03 exposed to 48 frost cycles MPa 10,7 1,6
EN 1926-07 Uniaxial compressive strength MPa 102,4 6,5
EN 14231-04 Slip resistance (honed finishing)
  (dry) USRV 66 2
  (wet) USRV 31 1,5
Block and slab characteristics
Average size of blocks: 3,00 x 1,70 x 1,70m. Slabs are preferably cut against the grain or perpendicular to the grain, i.e. the hard way and the easy way.

Cutting of blocksCutting of blocks   Surface lavorationSurface lavoration
Microscopic description according to EN 12407 e EN 12460
A crystalloblastic metamorphic lithotype with calcite crystals that are seriate in size between 50 and 400 ¦Ìm, subeuhedral/euhedral with mainly straight or rounded/sutured boundaries, and patches and veins. The areas that macroscopically appear lighter in colour are composed of very fine-grained calcitic crystals (< 50 ¦Ìm), that are generally clear, associated with larger-sized blasts (250 ¦Ìm) clouded by abundant opaque minerals and in places accompanied by iso-orientated acicular muscovite, pyrite, quartz (of a maximum size of 850 ¦Ìm) and trace amounts of feldspar. The darker veins, clearly iso-orientated, are composed of abundant magnetite in glomerules (200 ¦Ìm) associated with green phyllosilicates and rare hematite, limonite, chlorite, tourmaline, quartz and dolomite.