Daino or Orosei Marble

Characteristics and uses of Orosei marble:

hard and versatile stone, that never goes out of fashion, has always been appreciated for its durability, its resistance to wear and for outstanding aesthetic offering. Many are its uses in domestic field, original is for interior decoration and for design for the extraordinary nature of his veins, for the continuous changeability of its nuances and its ductility. Today, thanks to the newfound taste for decoration, is all the rage this material extraordinarily durable but still able to innovate. The Orosei marble is a fascinating material, of extraordinarily elegant, still able to excite us, let us immerse in the most ancient tradition and at the same time to be extraordinarily modern.

Formation of marble

Marble is a metamorphic rock composed mainly of calcium carbonate (CaCO3). The word comes from the ancient greek marble mármaron or Marmaros, meaning shining stone, itself derived from the verb marmàirō, which means to shine. Marble is formed through a process of metamorphic sedimentary rocks such as limestone or dolomite, which causes a complete recrystallization of calcium carbonate of which are predominantly composed and gives rise to a mosaic of crystals of calcite or dolomite (mineral) . The combined temperature and pressure during processing of sedimentary rock of marble, leads to progressive obliteration of the original structures and textures in the rock, with the consequent destruction of any fossil, sedimentary layering, or other structure in the original rock. The color of marble depends on the presence of impurity minerals (clay, silt, sand, iron oxides, nodules of flint), existing granules or layers within the sedimentary rock original. During the metamorphic process such impurities and recrystallised are moved due to pressure and heat. The white marbles are the result of the metamorphosis of limestone free from impurities.

Main properties of Orosei marble or Daino:

Limestone with beige color.
Place of extraction: Orosei (Sardinia's east coast) Tuttavista mountain (800 meters above sea level)
Training period: Jurassic (about 150 million years ago)
and Cretaceous (about 100 million years ago).
Main physical characteristics: CaCO3 (% by weight) 97.11 MgCO3 (%) 0.75 - Sio2 (%) 00:19
Weight per unit volume: 2,72 Tons / m3 - breaking load compression: 1.7 kg / cm2
Flexural strength: 148 kg / cm2 - Coefficient of water absorption: 0:33%

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