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Río Loro, Burruyacú Department, Tucumán, Argentina

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Name(s) in local language(s): Río Loro, Departamento Burruyacú, Provincia de Tucumán, Argentina
Manganese nodules:
Nodules are found in a tertiary sedimentary sequence of the Río Loro Formation (Elevation: 623 meters above sea level). They are spherical sub, of variable size from 2-3 cm to 10 cm in diameter. They can be banded with interbedded quartz and carbonates between gangs of manganese ores, although they can also be homogeneous. The main mineralization of nodules is constituted by Manganite accompanied by Hausmannite and Pyrolusite, all recognized by the diffraction of x-rays and optics.

Sediments and bituminous shale (asphaltum):
in some places such as Loro River, appear in layers of bituminous sediment thickness variable and not continuous. Simple horizon or compounds are presented.

Mineral List

7 entries listed. 4 valid minerals.

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Raúl Jorge Tauber Larry.

J. C. Ávila,M. E. Gozalvez y F. G. Sardi (1992). Los nódulos de manganeso de Tucumán.Su comparación con los de los fondos del Océano Pacífico. 1ra Reunión de Mineralogía y Metalogenia y 1ra Jornada de Mineralogía, Petrografía y Metalogénesis de Rocas Ultrabásicas. Instituto de Recursos Minerales, UNLP. Publicación 2: 35-44.

Hugo A. Peña (1970). Minerales y rocas de aplicación de la provincia de Tucumán. Dirección Provincial de Minas. Tucumán.

Mineral and/or Locality  
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