stripes
Occurrence number:
025-00-044
Country:
Brazil
Region:
Goias
Location:
Longitude: -51.75, Latitude: -16
Carbonatite:
Yes
An oval-shaped intrusion of 1.8x1.4 km cuts Devonian sandstones of the Furnas Formation and is covered with a lateritic soil averaging 55 m in thickness. The principal rock types are carbonatites, carbonatitic breccias, ijolite, monchiquite and silexite. Fenites take the form of albitites and syenitic breccias. The principal carbonatite is beforsite, but sovite and ferrocarbonatite are also present, composed of dolomite, calcite, ankerite and siderite and including baryte, opaques, rutile, pyrochlore and RE minerals.
Economic:
Anomalously high values for Sr, Ba and REE occur in the lateritic cover.
Age:
Post-Devonian.
References:
RODRIGUES, C. de S. and LIMA, P.R.A. dos S. 1984. Carbonatitic complexes in Brazil. Companhia Brasileira de Metalurgia e Mineracao: 1-17
Location: