Ardósia de Valongo

Schist and Slate

Blueish-grey to dark grey homogenous slaty schist, compact, fine grained and presenting clear schistose cleavage.

Other Names

Ardósia de Valongo – Nomenclature EN 12440, Lousa de Valongo

Petrographic Classification

Slate

Occurrence

Campo – Valongo

Origin

Porto

Common Uses

Flooring and cladding as well as other interior and exterior applications.

Available Reserves

Available

Source

]ROP Catalogue - http://rop.lneg.pt/rop/

Compression breaking load

187 Mpa
Compression breaking load after freezing test

168 Mpa
Bending strength

56,9 Mpa
Volumetric weigth

2820 kg/m3
Water absorption at N.P. conditions

0,4 %
Aparent porosity

1,2 %
Thermal linear expansion coeficient

7,6 X 10 -6 perº C
Abrasion test (Amsler-Laffon)

6,3 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.

Pereira Gomes & Carvalho, Lda.

Valongo
SOLICEL – Sociedade do Centro Industrial de Esteios de Lousa, Lda.

Vila Nova de Foz Côa
Alfredo Vicente Julião & Filho, Lda.

Sintra
Alves & Vinagre, Lda.

Sintra
Ardósias Valério & Figueiredo, Lda.

Arouca
Aurimarmore, Oficina Mecânica de Mármores e Cantarias, Lda.

Palmela
Duarte Mármores e Granitos

Sintra
Eduardo Marques & Rosa, Lda.

Ourém
Eurobrás, Mármores e Granitos, Lda.

Sintra
Frazão – Rochas, S.A.

Santarém
Inovopedra – Indústria Inovadora de Rochas Ornamentais, Lda.

Porto de Mós
Jerónimo e Ramos, Lda.

Cascais
Lusorochas, Rochas Ornamentais, Lda

Sintra
Moreira & Vazão, Lda.

Porto de Mós
Paulo Jorge dos Reis Fonseca

Alcobaça
Plurimarmores, Lda

Sintra
Ramon Magem Portugal, Lda.

Vila Viçosa
SOCIMAR – Sociedade Industrial de Mármores, Lda.

Porto de Mós
Torre

Ovar
Transgranitos – Mármores e Granitos do Alto Tâmega, Lda.

Vila Pouca de Aguiar
Zamármores – Sociedade de Mármores e Granitos, Lda.

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