Ardósia de Valongo
Schist and Slate
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/
Properties
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Compression breaking load187 Mpa
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Compression breaking load after freezing test168 Mpa
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Bending strength56,9 Mpa
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Volumetric weigth2820 kg/m3
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Water absorption at N.P. conditions0,4 %
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Aparent porosity1,2 %
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Thermal linear expansion coeficient7,6 X 10 -6 perº C
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Abrasion test (Amsler-Laffon)6,3 mm
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Impact test: minimum fall height110 cm
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Note: After 25 frost-defrost cycles the test pieces did not present any modifications in colour or structure.
Companies
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Pereira Gomes & Carvalho, Lda.Valongo
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SOLICEL – Sociedade do Centro Industrial de Esteios de Lousa, Lda.Vila Nova de Foz Côa
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Alfredo Vicente Julião & Filho, Lda.Sintra
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Alves & Vinagre, Lda.Sintra
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Ardósias Valério & Figueiredo, Lda.Arouca
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Aurimarmore, Oficina Mecânica de Mármores e Cantarias, Lda.Palmela
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Duarte Mármores e GranitosSintra
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Eduardo Marques & Rosa, Lda.Ourém
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Eurobrás, Mármores e Granitos, Lda.Sintra
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Frazão – Rochas, S.A.Santarém
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Inovopedra – Indústria Inovadora de Rochas Ornamentais, Lda.Porto de Mós
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Jerónimo e Ramos, Lda.Cascais
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Lusorochas, Rochas Ornamentais, LdaSintra
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Moreira & Vazão, Lda.Porto de Mós
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Paulo Jorge dos Reis FonsecaAlcobaça
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Plurimarmores, LdaSintra
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Ramon Magem Portugal, Lda.Vila Viçosa
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SOCIMAR – Sociedade Industrial de Mármores, Lda.Porto de Mós
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TorreOvar
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Transgranitos – Mármores e Granitos do Alto Tâmega, Lda.Vila Pouca de Aguiar
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Zamármores – Sociedade de Mármores e Granitos, Lda.Seixal