Stone : biotite-bearing granodiorite
Type : plutonic magmatic rock
Age : between 540 and 520 million years
Quarry : Bécanne, Lanhélin (Ille-et-Vilaine)
![](local/cache-vignettes/L1920xH1032/bb3511b74ed2b9bed1e1c81cab0ea8-1fcea.jpg?1711119992)
Stone : biotite-bearing granodiorite
Type : plutonic magmatic rock
Age : between 540 and 520 million years
Quarry : Bécanne, Lanhélin (Ille-et-Vilaine)