stripes
Located during the RADAM Project, Seis Lagos consists of three circular structures aligned north-south with approximate diameters of 5.5, 0.75 and 0.5 km. They form laterite covered hills surrounded by gneisses and migmatites of the peneplained Guianense complex. The laterites have an average depth of about 230 m and are radioactive. Siderite, ankerite, dolomite, baryte, goethite, pyrite and niobian rutile have been identified in carbonatite from drill holes.
BONOW, C. de W. and ISSLER, R.S. 1980. Reavaliacao e aspectos economicos do jazimento de terras rares a ferro-ligas do lago esperanca complexo carbonatitico dos Seis Lagos - Amazonas - Brasil. Anais do Congresso Brasileiro de Geologia, Santa Catarina, 31(3): 1431-5.
ISSLER, R.S. 1978. The Seis Lagos carbonatite complex. Proceedings of the First International Symposium on Carbonatites, Pocos de Caldas, Brasil: 233-40.
RODRIGUES, C. de S. and LIMA, P.R.A. dos S. 1984. Carbonatitic complexes in Brazil. Companhia Brasileira de Metalurgia e Mineracao: 1-17