Alkaline Rocks and Carbonatites of the World

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

Keregetas

stripes

Occurrence number: 
084-00-037
Country: 
Kazakhstan
Location: 
Longitude: 80.7, Latitude: 49.05
Carbonatite: 
No

Situated in the Keregetas Mountains the intrusion lies within extrusive deposits of Carboniferous age and upper Palaeozoic granitoids. It is somewhat elongate and dyke-like in form the length being 9 km but the width varying from only 100 to 850 m. It consists of biotite, riebeckite, aegirine-riebeckite and astrophyllite-riebeckite granites. In the central part of the intrusion in astrophyllite-riebeckite granites there is a zircon mineralization (Ziryanov, 1969).

References: 

ZIRYANOV, V.N. 1969. Petrology of the metasomatically altered granitoids and alkaline rocks of the Chingizsky zone. Nauka, Moscow. 160 pp.

Map: 
Fig. 2_82. Keregetas (after Ermolov, 1988, Fig. 4).
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith