Granitos del Val

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Gris Piñor


The gris morrazo, or gris Piñor, is a light grey, compact, medium-grained, irregularly fractured rock. It is classified as “biotite granite” and its reserves can be considered medium to large. Its average grain size ranges between 1.5 and 2.5 cm and it presents a low degree of alterations, allowing any type of surface finish without losing its polished finish or deteriorating over time It can be used both outdoors and indoors.


Mugares, Toén (Spain)

Physical-mechanical characteristics:

  • Water absorption: 0.2 %.

  • Bulk density: 2640 Kg/m3

  • Resistance to frost: 1.7 %

  • Compressive strength 183 MPa

  • Bending strength 16.9 MPa

  • Abrasion resistance: 16.7 mm

  • Anchorage resistance: 2450 N