Alkaline Rocks and Carbonatites of the World

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

Kharasasunskii

stripes

Occurrence number: 
136-03-047
Country: 
Russia
Region: 
South Baikal sub-province
Location: 
Longitude: 106, Latitude: 50.62
Carbonatite: 
No

Nepheline syenites form several small bodies of 10 x 15, 4 x 30 and 10 x 120 m amongst biotite or aegirine-hornblende syenites. The nepheline content is variable and generally between 5 and 25%. Small areas of coarse-grained nepheline syenite are found. Sodalite forms thin veins in the nepheline syenites

Age: 
Mesozoic – by analogy with other nepheline syenites of the region.
References: 

KUZNETSOVA, F.V. 1975. Nepheline syenites of the margin of the Borgoi depression. Nauka, Siberian Branch of the USSR Academy of Sciences, Novosibirsk. 92 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