Rocks and minerals from Ilimaussaq
Photos of selected samples from the agpaitic intrusion in Greenland
Month: June 2007
Rocks and minerals around Oldoinyo Lengai and Lake Natron
Oldoinyo Lengai (expedition report 2003 with further explanations and references) is well known for its strange lavas: natrocarbonatite is only found here, and at the same time it is the only active carbonatite volcano in the world. But the silicate rocks that make up most of the volcano are also unique, such as combeite nephelinite … Continue reading “Rocks and minerals around Oldoinyo Lengai and Lake Natron”