VALONGO
Allgemeine Informationen
| Trading names | VALONGO, PORTO-SCHIEFER, ARDOISE DE VALONGO, ARDOSIA DE VALONGO, LOUSA DE VALONGO |
| Location where found | Valongo / Porto |
| Country | Portugal | Coloring | black |
| Structure | Largely without direction |
| Availability | Available |
Gestein
| Bezeichnung | Clay schist |
| Alter | Ordovician |
| Gesteinsgruppe | Sedimentary rocks |
Technische Eigenschaften
| Polish quality | Only fine sanding possible. |
| Suitable for flooring | Suitable. However, the high abrasion resistance of hard stone is not achieved |
| Acid resistant | The stone is resistant to acid under usual circumstances. |
Technische Daten
| Bulk density | 2,809 t/m³ |
| Pressure resistance | 65,6 MPa |
| Druckfestigkeit Frost | 49,4 MPa |
| Abrasion resistance according to Italian standard | 8,3 |
| Bending strength | 58,2 MPa |
| Water absorption | 0,45 Gew.-% |
| Porosity | 1,25 Vol.-% |
| Thermische Dehnung | 0,8 mm/m/100K |
INSK – Internationale Naturstein-Kartei
| INSK Number old | 6.6.1 |
| INSK Number | 57.4 |
Care information from Möller-Chemie
Stain removal guide:
Recommendations for bonding and filling
Productfinder bonding / filling:
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