Alkaline Rocks and Carbonatites of the World

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Pavlovskii (Shagalinskii, South Krasnomaiskii)

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Occurrence number: 
084-00-006
Country: 
Kazakhstan
Location: 
Longitude: 69, Latitude: 53.12

Pavlovskii has the form of a dyke and is about 4 km long. The principal rock type, occupying about two thirds of the intrusion, is lepidomelane-apatite pyroxenite with 5-15% apatite; there are streaks and patches enriched in melanite. The pyroxenites are cut by veins and dykes, from 2-50 cm to 1-5 m wide, of sviatonossite, malignite and alkaline and nepheline syenites. In the nepheline syenites the nepheline is sometimes replaced by zeolite, cancrinite and liebenerite. Zones of weathering up to 20-30 m deep, which has produced 9-20% hydro-mica and vermiculite, are developed over the pyroxenites.

Economic: 
Apatite and vermiculite concentrations occur.
References: 
NURLIBAYEV, A.N. 1973. Alkaline rocks of Kazakhstan and their ore deposits. Nauka, Alma-Ata. 296 pp.
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith