Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)
Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)
Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)
Świeciechów flint : 2D documentation Turonian
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Świeciechów flint : 3D documentation Turonian
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Siliceous hypertrophy : 2D documentation Upper Jurassic
Świeciechów flint : 3D documentation Turonian