Mineral: Calcite
Locality: Glageon Quarry, Avesnes-sur-Helpe, Nord, Hauts-de-France, France
Dimensions: 11.5 x 9 x 4.2 cm

Description: A scalenohedral geode of dog’s dents, fine-grained. A private prospect of Jean Martin in 1980. Added in collection in 2022.

All pictures, text, design © Forum FMF 2006-2025