KÜHBERG
Allgemeine Informationen
| Trading names | KÜHBERG, NAMMERING |
| Location where found | Steinbruch Kühberg / Fürstenstein |
| Country | Germany |
| State | Bavaria |
| Region | Bavarian Forest | Coloring | dark grey, light grey |
| Grain size | Fine to medium grained |
| Structure | irregularly cloudy |
| Availability | Available |
Gestein
| Bezeichnung | Tonalite |
| Alter | Upper Carboniferous |
| Gesteinsgruppe | Abyssal rock |
Technische Eigenschaften
| Polish quality | Polish possible. |
| Polish durability | The polish is durable for exterior use. |
| Suitable for flooring | Suitable |
| Acid resistant | The stone is resistant to acid under usual circumstances. |
| Frost resistant | frost resistant |
Technische Daten
| Pressure resistance | 225 MPa |
| Druckfestigkeit Frost | 205 MPa |
| Abriebfestigkeit | 5,9 cm³/50cm² |
| Bending strength | 21,5 MPa |
Mineralbestand
| Quarz | 21 % |
| Plagioclase | 50 % |
| Amphibole | 16 % |
| Pyroxene (augite) | 1 % |
| Biotite mica | 9 % |
| Titanite | 2 % |
| Ore minerals | 1 % |
INSK – Internationale Naturstein-Kartei
| INSK Number old | 4.2.37 |
| INSK Number | 12.17 |
Care information from Möller-Chemie
Stain removal guide:
Recommendations for bonding and filling
Productfinder bonding / filling:
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