stripes
Occurrence number:
008-00-006
Country:
Argentina
Region:
Catamarco
Location:
Longitude: -66.42, Latitude: -27.42
Carbonatite:
No
A dyke intrudes Precambrian granodiorite on the northern side of Cerro Aspero and consists of amphibole phenocrysts up to 5 mm long, which with matrix amphibole comprises 50% of the rock, with nepheline (20%), pale green pyroxene (10%), magnetite and accessories including an isotropic mineral (?analcime).
References:
BONORINO, F. G. 1950. Geologia y petrografia de las Hojas 12d (Capillitos) y 13d (Andalgala). Boletin, Argentina Ministerio de Industria y Comercio de la Nacion. Direccion General de Industria Minera, 70‚ 1-100.
Location: