Brecha Pérola

Limestone

Brecha Pérola

Limestone

Calciclastic greyish limestone, slightly nacred and with rosy small veins. Breccious appearance with recrystalized calcite areas.

Other Names
Brecha Pérola – Nomenclature EN 12440, Brecha Lioz
Petrographic Classification
Limestone
Occurrence
Moncarapacho, Olhão
Origin
Faro
Common Uses
Interior cladding
Available Reserves
Presently not extracted
Source
Moura, A. C., & Carvalho, C. (2007). Mármores e calcários ornamentais de Portugal. Gestão de Artes Gráficas SA, Amadora. – (http://www.lneg.pt/download/7310/index.html)

Properties

  • Compression breaking load
    133 Mpa
  • Compression breaking load after freezing test
    1290 Mpa
  • Bending strength
    12,7 Mpa
  • Volumetric weigth
    2690 kg/m3
  • Water absorption at N.P. conditions
    0,2 %
  • Aparent porosity
    0,4 %
  • Thermal linear expansion coeficient
    5,5 X 10 -6 perº C
  • Abrasion test (Amsler-Laffon)
    1,2 mm
  • Impact test: minimum fall height
    50 cm
  • Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.

Companies

Processing
Extraction