stripes
Occurrence number:
155-00-060
Country:
Sudan
Location:
Longitude: 22.72, Latitude: 14.17
Carbonatite:
No
This quartz syenite intrusion is approximately 8 km in diameter, forms a hill, and is intruded into granite gneisses. The syenite consists of microcline perthite, quartz, aegirine and sodic amphibole; the last occurs as discrete crystals and cores to aegirine.
References:
LOTFI, M. 1963. The geology of a part of Western Darfur. Journal of Geology of the United Arab Republic, 7: 89-103.
Location: