Xisto de Barrancos

Schist and Slate

Xisto de Barrancos

Schist and Slate

Micaceous schist with greenish tonality, sometimes yellowish, reddish or with tones of indigo, presenting meander-like bioturbations.

Other Names
Xisto de Barrancos – Nomenclature EN 12440
Petrographic Classification
Schist
Occurrence
Barrancos
Origin
Beja
Common Uses
Cladding and various decorative works for interiors.
Available Reserves
Rare
Source
Catalog ROP of LNEG (http://rop.lneg.pt/rop/FormTipo.php)

Properties

  • Compression breaking load
    43 Mpa
  • Compression breaking load after freezing test
    42 Mpa
  • Bending strength
    34,8 Mpa
  • Volumetric weigth
    2730 kg/m3
  • Water absorption at N.P. conditions
    1 %
  • Aparent porosity
    2,8 %
  • Thermal linear expansion coeficient
    7,2 X 10 -6 perº C
  • Abrasion test (Amsler-Laffon)
    9,8 mm
  • Impact test: minimum fall height
    110 cm

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

Companies

Processing
Extraction
  • SOLICEL – Sociedade do Centro Industrial de Esteios de Lousa, Lda.
    Vila Nova de Foz Côa
  • Aurimarmore, Oficina Mecânica de Mármores e Cantarias, Lda.
    Palmela
  • Duarte Mármores e Granitos
    Sintra
  • Eurobrás, Mármores e Granitos, Lda.
    Sintra
  • Moreira & Vazão, Lda.
    Porto de Mós