FREDEBURG
Allgemeine Informationen
| Trading names | FREDEBURG, SAUERLAND-SCHIEFER, FREDEBURGER SCHIEFER |
| Location where found | Bad Fredeburg/ Schmallenberg |
| Country | Germany |
| State | North Rhine-Westphalia | Coloring | black |
| Structure | Largely without direction |
| Availability | Available |
Gestein
| Bezeichnung | Clay schist |
| Alter | Middle Devonian |
| 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. |
| Frost resistant | frost resistant |
Technische Daten
| Bulk density | 2,77 t/m³ |
| Reindichte | 2,829 t/m³ |
| Bending strength | 43-55 MPa |
| Water absorption | 0,66 Gew.-% |
| Porosity | 2,1 Vol.-% |
INSK – Internationale Naturstein-Kartei
| INSK Number old | 6.6.10 |
| INSK Number | 57.3 |
Care information from Möller-Chemie
Recommendations for bonding and filling
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