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El Criollo Mine, Cerro Blanco pegmatite district, Tanti, Punilla Department, Córdoba, Argentina

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Latitude & Longitude (WGS84): 31° 21' 28'' South , 64° 39' 9'' West
Latitude & Longitude (decimal): -31.3577777778, -64.6525
Other regions containing this locality:South America


Granite pegmatite quarry about 10 km from the town of Tanti. The blue cobaltoan genthelvite from here, now widely distributed in collections, is not from the pegmatite body itself, but from a younger vein of friable specular hematite that cuts across the pegmatite body.

Main Mineralization:
Triplite(coppery Brown color):
Mines El Criollo and El Gaucho, Cerro Blanco, Tanti Department. Punilla, Cordoba: The core zone, large masses or bochones of up to 5 m in diameter. The meteoric action alters it strengite, phosphosiderite, bermanite, libethenite, dufrenite, eosphrite rockbridgeite.

Eosphorite(reddish-brown color):
El Criollo Mine, Cerro Blanco, Tanti Department Punilla Córdoba. With Bermanite, Phosphosiderite and manganese oxides as products of alteration of Triplite.

Bermanite(micro crystals Brown caramel color):
In pegmatites of the Cerro Blanco, Tanti, Punilla Department, Córdoba. In thin crust between the products of alteration of the Triplite present in this locality pegmatites. It is associated with Phosphosiderite, Eosphorite and Pachnolite. Also deposited directly on manganese oxides or covered partially by.

Strengite(micro crystals rose-purple color):
El Criollo Mine, Cerro Blanco, Department Punilla, Cordoba. Occurs in drusen material altered bodies pegmatiticos, accompanied by Apatite, sulphides and quartz; also in crusts thin covering cracks in Triplite; less frequent as aggregates of radial-fibrous structure spherulites.

Phosphosiderite(micro Crystals Violet color):
El Criollo Mine, Cerro Blanco, Department Punilla, Cordoba. Are frequent the druses with beautiful crystals of 1 mm, well developed, very varied habits.

Torbernite, Metatorbernite:
Cerro Blanco, Tanti, Punilla Department, Cordoba. Pegmatite carrier of primary and secondary uranium minerals.



Mineral List


65 valid minerals. 1 (TL) - type locality of valid minerals.

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References

H. D. Gay (1968). Fosfatos en la pegmatita del cerro Blanco, Tanti, provincia de Córdoba. Revista de la Asociación Geológica Argentina, 23:279-286.

S. C. Hurlbut y L. F. Aristarain (1968). Bermanite and its occurrence in Córdoba, Argentina. American Mineralogist, 53:416-431.

I. B. Schalamuk (1969). Contribución al conocimiento de los fosfatos de las pegmatitas de cerro Blanco, Tanti, provincia de Córdoba. Revista de la Asociación Geológica Argentina, 25:121-137.

I. B. Schalamuk (1969). Contribución al conocimiento de los fosfatos de las pegmatitas del cerro Blanco, Tanti, provincia de Córdoba. Revista de la Asociación Geológica Argentina, 25:121-137.

R. O. Toubes, E. Chaar y J. P. Spikermann (1973). Minerales radioactivos de la República Argentina. 5° Congreso Geológico Argentino, 1:249-260.

American Mineralogist (1978): 53: 416-431.

H. D. Gay y M. B. Franchini (1984). Cristales de triplita en pegmatitas de las sierras de Córdoba. Revista de la Asociación Argentina de Mineralogía, Petrología y Sedimentología, 15 (1-2):46-48.

Dina, H. (1993). Hentschelita en Cerro Blanco, Tanti, Córdoba. Informacion Tecnologica, 48(3-4), 277-282.

Zeitschr. Krist.(1993): 208: 57-71.

Demartin F, Gay H D, Gramaccioli C M, Pilati T (1997) Benyacarite, a new titanium-bearing phosphate mineral species from Cerro Blanco, Argentina. The Canadian Mineralogist 35, 707-712

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2000) Handbook of Mineralogy, Volume IV. Arsenates, Phosphates, Vanadates. Mineral Data Publishing, Tucson, AZ, 680pp.

G. Mas, H. Peral y L. Bengochea (2002). Triplita de Cerro Blanco, Córdoba, Argentina: triplita o zwieselita?. 6° Congreso de Mineralogía y Metalogenia: 263-266.

Černý, P., Galliski, M. A., Oyarzábal, J. C., Teertstra, D. K., Chapman, R., MacBride, L., & Ferreira, K. (2003). Stranded and equilibrated assemblages of late feldspars in two granitic pegmatites in the Pampean Ranges, Argentina. The Canadian Mineralogist, 41(4), 1013-1026.

Mr. Nelson Valenzuela.

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