stripes
Occurrence number:
034-00-002
Country:
Chile
Region:
Magallanes
Location:
Longitude: -73.18, Latitude: -51.42
Carbonatite:
No
Syenites comprising orthoclase, albite-oligoclase, aegirine- augite, arfvedsonite and a little quartz, and nordmarkites including quartz, fayalite and aegirine-augite are described from the Cerro Balmaceda vicinity by Quensel (1912, p. 36). Chemical analyses are given but there are few details of field relationships.
Age:
Probably Upper Cretaceous (Quartino and Llambias, 1964, p. 4).
References:
QUARTINO, B.J. and LLAMBIAS, E. 1964. Synopsis on rocks with alkaline affinities in the Argentine Republic. Report of the 22nd Session, International Geological Congress, 16: 1-12.
QUENSEL, P.D. 1912. Geologisch-petrographische Studien in der Patagonischen Cordillera. Bulletin of the Geological Institution of the University of Upsala, 11: 1-114
Location: