BIRKENKOPF
Allgemeine Informationen
Trading names | BIRKENKOPF, GRAUER HARZ-GRANIT, BROCKEN-GRANIT, BROCKEN BLAU |
Location where found | Birkenkopf/ Thale/ Harz |
Country | Germany |
State | Saxony-Anhalt | Coloring | light grey |
Grain size | Medium grained |
Structure | Largely without direction |
Availability | Available |
Gestein
Bezeichnung | Granite |
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
Bulk density | 2,63 t/m³ |
Pressure resistance | 193 MPa |
Abriebfestigkeit | 6 cm³/50cm² |
Water absorption | 0,13 Gew.-% |
Mineralbestand
Orthoclase (alkali feldspar) | 52,2 % |
Plagioclase | 20,1 % |
Quarz | 22,3 % |
Biotite mica | 5,3 % |
INSK – Internationale Naturstein-Kartei
INSK Number old | 3.1.13 |
INSK Number | 11.3 |
feingeschliffen, poliert:
Recommendations for bonding and filling
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