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Nío River, Burruyacú Department, Tucumán, Argentina

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Latitude & Longitude (WGS84): 26° 26' 27'' South , 64° 58' 15'' West
Latitude & Longitude (decimal): -26.4408333333, -64.9708333333
Name(s) in local language(s): Río Nío
The ore of manganese found in the northern part of the province of Tucumán is presented as Psilomelane, Pyrolusite and Criptomelane, appearing deposits in the area of Puerta Quemada and river Nío, distant about 42 kilometres from the city of San Miguel de Tucumán.
The Puerta Quemada and river Nío region consists of gentle hills, with gully and streams with clayey sandy Canyon. The hills are covered by Andean meadows which contrast with the western slope of the Sierra of the Ramada and El Nogalito Eastern.
The exposed terrain in the region are composed of Sandy-Clay material with interbedded cineritic and conglomeradic. In a profile of the area, is observed after a chemical cover, the succession of clays, marls, boulders, sand, volcanic ash, loose, reddish or pink, clayey sandstone horizons more clay from 0.40 to 1 meter thick carriers of manganese nodules; There are then sandstones of dolls, hard sandstone and calcareous sandstones, all belonging to the Tertiary-Mesozoic.
Puerta Quemada ore is low-grade and uneven distribution, occurring in scattered and variable size in the limolite Nodular concretions, which is enriched with ore of manganese in a significant proportion.

Mineral List

4 entries listed. 2 valid minerals.

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1- Víctor Angelelli (1950) - Recursos minerales de la República Argentina. Tomo I. Yacimientos metalíferos. Instituto Nacional de Investigaciones de las Ciencias Naturales. Museo B. Rivadavia. Buenos Aires.
2- Gervasio Álvarez (1938) - Minerales de manganeso de Tucumán. Cuaderno de mineralogía y geología de la Universidad Nacional de Tucumán. Tomo I, Nº 3.
3- Roberto Beder (1926) - Las concreciones de mineral de manganeso de los estratos del Terciario Subandino de Puerta Quemada. Dpto. de Burrayacú, Tucumán. Publicación Nº 16 de la Dirección General de Minas, Geología e Hidrología de la Nación. Buenos Aires.
4- Z. Ch. de Centrángolo (1939) - Estudios mineralógicos y comparativos de algunos Psilomelanos Argentinos. Cuadernos de mineralogía y geología de la Universidad Nacional de Tucumán. Tomo 2, Nº 5. Tucumán.
5- Celestino A. Danieli (1967) - Facies tucumana del Terciario Subandino, sus correlaciones estratigráficas y litológicas en el N.W. Argentino. Acta geológica Lilloana Nº 8, Inst. Miguel Lillo (U.N.T.). Tucumán.
6- Abel Peirano (1945) - Estudio geológico de la cuenca del Río Nío Dpto. de Burruyacú (Tucumán). Cuaderno de mineralogía y geología de la Universidad Nacional de Tucumán. Tomo IV, Nº13. Tucumán.
7- S. D. Villareal (1943) - Estudio Químico de algunos minerales de manganeso del centro y noroeste argentino. Cuaderno de mineralogía y geología de la Universidad Nacional de Tucumán. Tomo III, Nº9. Tucumán.
8- R. Mon, A. Urdaneta y L. Suayter (1971)- Estudio Geológico de las Sierras del Campo y La Ramada (Provincia de Tucumán). Acta Geológica Lilloana, Tomo X1: 15. Fundación e Instituto Miguel Lillo, Universidad Nacional de Tucumán.

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