Description: Arfvedsonite, Tugtupite, Albite Ilímaussaq Intrusive Complex, Narsaq, Greenland 4,5 x 3,5 x 3 cm Arfvedsonite is the typical amphibole of the intrusion. The best way to distinguish from Aegirine is through the strike colour that is more bluish for Arfvedsonite, while that of aegirine is clearly green-green.

All pictures, text, design © Forum FMF 2006-2024