Cinza Escuro Roriz

Granite

Cinza Escuro Roriz

Granite

Rock with fine grain. Holocrystalline sample, phaneritic, mesocratic, with grayish blue shade. Homogeneous granular texture. Good cohesion. Does not show holes, cracks, veins or lineation. Minerals constituents have grains shape commonly anhedral. Does not present alteration or weathering. This rock is essentially formed by feldspar, biotite and quartz.

Other Names
Cinzento de Paços Ferreira, Azul cinzento - Nomenclatura EN12440, Roriz, Cinzento escuro de Paços de Ferreira, Negro Roriz
Petrographic Classification
Monzogranite
Occurrence
Sanfins de Ferreira – Paços de Ferreira
Origin
Porto
Common Uses
Interiors and exterios
Available Reserves
Available
Source
Information given by Sociedade das Pedreiras do Marco, Lda

Properties

  • Compression breaking load
    157 Mpa
  • Compression breaking load after freezing test
    n.d Mpa
  • Bending strength
    17,2 Mpa
  • Volumetric weigth
    2700 kg/m3
  • Water absorption at N.P. conditions
    0,2 %
  • Aparent porosity
    0,8 %
  • Thermal linear expansion coeficient
    n.d X 10 -6 perº C
  • Abrasion test (Cappon)
    16,5 mm
  • Impact test: minimum fall height
    n.d cm
  • Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.

Companies

Processing
Extraction