Xisto Negro de Foz Côa

Schist and Slate

Xisto Negro de Foz Côa

Schist and Slate

Schistose laminated rock, fine-grained, dark grey coloured, with irregular and deformed schistose cleavage, with alternation between lighter fine-grained beds and darker pelitics beds.

Other Names
Xisto Negro de Foz Côa – Nomenclatura EN 12440, Ardósia de Foz Côa, Xisto Preto de Vila Nova de Foz Côa, Infercoa
Petrographic Classification
Schist
Occurrence
Vila Nova de Foz Côa
Origin
Guarda
Common Uses
Cleaved or sawn products for interiors or exteriors, except roofing tiles.
Available Reserves
Available
Source
Catalog ROP of LNEG (http://rop.lneg.pt/rop/FormTipo.php)

Properties

  • Compression breaking load
    128 Mpa
  • Compression breaking load after freezing test
    115 Mpa
  • Bending strength
    60,9 Mpa
  • Volumetric weigth
    2760 kg/m3
  • Water absorption at N.P. conditions
    0,2 %
  • Aparent porosity
    0,4 %
  • Thermal linear expansion coeficient
    8,4 X 10 -6 perº C
  • Abrasion test (Amsler-Laffon)
    0,3 mm
  • Impact test: minimum fall height
    55 cm

  • Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.

Companies

Processing
Extraction
  • António Augusto Pais, Lda.
    Vila nova de Foz Côa
  • Cupa Stone, Lda.
    Águeda
  • Silaco Natural Stones, Lda.
    Ourém
  • SOLICEL – Sociedade do Centro Industrial de Esteios de Lousa, Lda.
    Vila Nova de Foz Côa
  • Alfredo Vicente Julião & Filho, Lda.
    Sintra
  • Duarte Mármores e Granitos
    Sintra
  • Eurobrás, Mármores e Granitos, Lda.
    Sintra
  • Inovopedra – Indústria Inovadora de Rochas Ornamentais, Lda.
    Porto de Mós
  • Netostones – Raul Dias Neto, S.A.
    Alcanena
  • Paulo Jorge dos Reis Fonseca
    Alcobaça
  • Plurimarmores, Lda
    Sintra
  • SOCIMAR – Sociedade Industrial de Mármores, Lda.
    Porto de Mós
  • SOLICEL – Sociedade do Centro Industrial de Esteios de Lousa, Lda.
    Vila Nova de Foz Côa