INSUGEO 12554
INSTITUTO SUPERIOR DE CORRELACION GEOLOGICA
Unidad Ejecutora - UE
artículos
Título:
The mineral assemblege andalusite-corundum from "La Aurora" pegmatite from Mazán Pegmatitic Field, Northwestern Argentina
Autor/es:
SARDI, F., BENGOCHEA, L., MAZ, G.
Revista:
Estudos Geológicos
Editorial:
Departamento de Geología, UFPE
Referencias:
Lugar: Recife, Brasil; Año: 2009 vol. 19 p. 332 - 336
ISSN:
0080-0244
Resumen:
It is the fi rst mention of the andalusite-corundum paragenesis in the pegmatites
from the Mazán pegmatitic fi eld of the Pampean Pegmatitic Province. This paragenesis
has been found into the K-feldspar zone of the "La Aurora" pegmatite, which has spatial
relationship with the strongly peraluminous Mazán Granite. The genetic studies on the
pegmatite are preliminary, but according to the literature data, "La Aurora" pegmatite
could have been formed from supracortical H2O-saturated peraluminous melts. The cell
parameters (in Å) of andalusite and corundum were determined by means of XRD. The
mean value determined for andalusite are ao = 7,794; bo = 7,897; co = 5,554 and for
corundum ao = 4,754; co = 12,993.
