Cinzento de Alpalhão

Granite

Cinzento de Alpalhão

Granite

Fine grained granite, dominantly biotitic with a homogenous grey colour.

Other Names
Azul de Alpalhão – Nomenclature EN 12440, Cinzento Azulado de Alpalhão, SPI, MFI
Petrographic Classification
Granite
Occurrence
Alpalhão, Nisa
Origin
Portalegre
Common Uses
Exteriors and interiors.
Available Reserves
Available
Source
Catalog ROP of LNEG (http://rop.lneg.pt/rop/FormTipo.php)

Properties

  • Compression breaking load
    165 Mpa
  • Compression breaking load after freezing test
    160 Mpa
  • Bending strength
    15,7 Mpa
  • Volumetric weigth
    2640 kg/m3
  • Water absorption at N.P. conditions
    0,3 %
  • Aparent porosity
    0,7 %
  • Thermal linear expansion coeficient
    8,8 X 10 -6 perº C
  • Abrasion test (Amsler-Laffon)
    0,3 mm
  • Impact test: minimum fall height
    65 cm
  • Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.

Companies

Processing
Extraction