Stratigraphy and mineralogy of the manganese sedimentary deposits of the Coquimbo province, Chile
Aguirre Le Bert, LuisMehech, Sonia, Región de Coquimbo 1963 IIG Stratigraphy and mineralogy of the manganese sedimentary deposits of the Coquimbo province, Chile MINERALES METALICOSGEOLOGIA, GEOLOGIA ECONOMICA, MANGANESO, MINERALOGIA, ESTRATIGRAFIA, EL ROMERO, FRAGUA, CORRAL QUEMADO, CHILE, REGION 04,