Mineral: Mesolite (?), Analcime, Heulandite-Ca
Locality: Hvalfjörður, Capital Region, Iceland
Dimensions: 46x38x12mm
Description: Balls of most likely Mesolite (each ball is up to 6mm across) on Analcime and Heulandite (some of that is more visible on backside)
All pictures, text, design © Forum FMF 2006-2025