Potassic-magnesio-fluoro-arfvedsonite
Potassic-magnesio-fluoro-arfvedsonite is an amphibole mineral first discovered in Quebec, Canada, in an area which is part of the Canadian Shield which is where some of the oldest exposed rocks are that can date back to over 4 billion years ago. Potassic-magnesio-fluoro-arfvedsonite is also the mineral with the longest name of any mineral with 34 letters and 37 characters.