Ijolitic
Ijolitic is a rare type of igneous rock. It is an ultramafic rock, meaning it contains a high proportion of mafic minerals. Ijolitic is characterized by its coarse-grained texture and its mineral composition, which typically includes nepheline, melilite, and augite. Other minerals that can be present include olivine, apatite, perovskite, and magnetite. The name "ijolite" is derived from the Ijolli massif in the Kola Peninsula of Russia, where the rock was first described.
Ijolitic rocks are usually found in association with other alkaline igneous rocks, such as melteigites, urtites,
The geological occurrence of ijolitic rocks is relatively limited, with notable occurrences in the Kola Peninsula,