Alkaline Rocks and Carbonatites of the World

Setup during HiTech AlkCarb: an online database of alkaline rock and carbonatite occurrences

Chara

stripes

Occurrence number: 
136-14-028
Country: 
Russia
Region: 
Dalbykha group of intrusions
Location: 
Longitude: 102.03, Latitude: 70.3
Carbonatite: 
No

This small intrusion of 1.2 km2 has a nucleus of melteigite in which there are inclusions of porphyritic melanephelinite and olivine melanephelinite. A ring-dyke of ijolite encircles the nucleus and in the northern part of the intrusion melilitic rocks are developed. There are veins of both ijolite and syenite.

References: 

EGOROV, L.S. 1991. Ijolite carbonatite plutonism (case history of the Maimecha-Kotui complexes northern Siberia). Nedra, Leningrad. 260 pp.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith