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El Quemado district, Nevados de Palermo, La Poma department, Salta, Argentina

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Latitude & Longitude (WGS84): 24° 47' 4'' South , 66° 21' 43'' West
Latitude & Longitude (decimal): -24.78444,-66.36194
Name(s) in local language(s):Distrito de El Quemado, Nevados de Palermo, Salta, Argentina


Located in the border of La Poma (north portion) and Cachi (south) departments.

History and mineralization:
Complex granitic pegmatites as tabular bodies up to several hundred meters long and 30m thick. Hosted in schists of the La Playa Formation, related to a trondheimite intrusion.

Main mines: El Quemado, El Peñón, La Elvirita, Santa Elena.
Main minerals are quartz, plagioclase, microcline, to which is added Spodumene, Muscovite, Biotite, Beryl, Lepidolite, Tourmaline, Sphalerite, Molybdenite, Uraninite, Niobite, Tantalite, Native Bismuth, Bismuthinite, Ferrotapiolite, Manganotantalite, Microlite, Uranomicrolite, Bismuthmicrolite, Hafniferous Zircon, Triplite, Montebrasite and other phosphates and uranium oxide minerals.

Minerals of the columbite group have varying compositions: from Ferrocolumbite to Manganocolumbite and the less evolved pegmatites and Shales to Manganotantalite in Santa Elena, El Quemado and El Peñon mines. In these cases, Microlite, Uranomicrolite, and occasionally Bismuth-Microlite often accompany the most advanced members. Ferrocolumbite was determined by chemistry and x-ray diffraction. The crystals are centimetric to millimetric, tabular, sub to euhedrales, with development of forms {010}, {100}, {110}, {130}, {011}, {111} in different combinations. Found in the intermediate areas, including in plagioclase, microcline or primary phosphates. Alluvial crystals are prismatic or tabular thicknesses and often have vertical striations. They are black, fragile and have metallic sheen to submetallic.

Mineral List

Mineral list contains entries from the region specified including sub-localities

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

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Cenozoic
0 - 66 Ma
Cenozoic mixed volcanic, volcaniclastic and sedimentary rocks

Age: Cenozoic (0 - 66 Ma)

Comments: This designation includes Precambrian iron-formation-bearing sedimentary and volcanic sequences, as well as mixed sedimentary and volcanic or volcaniclastic sequences.

Lithology: Mixed volcanic, volcaniclastic and sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region

Argentina

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Galliski, M. A. (1983). Distrito minero El Quemado, Deptos. La Poma y Cachi, provincia de Salta. II. Geología de sus pegmatitas. Rev. Asoc. Geol. Argentina, 38, 340-380.

M. F. Marquez-Zavalía, M. A. Galliski, P. Černý, P.,R. Chapman (2010): A bismuth-rich, tellurium-bearing mineral assemblage from El Quemado granitic pegmatite, Nevados de Palermo, Salta, Argentina. Canadian Mineralogist, 48, (in press).

Márquez-Zavalía, M. F., Galliski, M. Á., Černý, P., & Chapman, R. (2012). An Assemblage Of Bismuth-Rich, Tellurium-Bearing Minerals In The El Quemado Granitic Pegmatite, Nevados De Palermo, Salta, Argentina. The Canadian Mineralogist, 50(6), 1489-1498.

M. A. Galliski y I. L. de Upton (1992). Composición y propiedades de minerales de niobio y tantalio de las pegmatitas graníticas de El Quemado, provincia de Salta. Revista de la Asociación Geológica Argentina, 47(3): 323-331.

M. A. Galliski (1983). Distrito minero El Quemado, dptos. La Poma y Cachi, provincia de Salta. II. Geología de sus pegmatitas. Revista de la Asociación Geológica Argentina, 38(3-4), 340-380.

M. A. Galliski (1999). Distrito pegmatítico El Quemado, Salta. En: Recursos Minerales de la República Argentina (Ed. E.O. Zappettini). Instituto de Geología y Recursos Minerales SEGEMAR, Anales 35: 347-350.

M. A. Galliski, M. F. Márquez-Zavalía, M. A. Cooper, P. Černý y F. C. Hawthorne (2001). Bismutotantalite from northwestern Argentina: description and crystal structure. The Canadian Mineralogist, 39: 103-110.

Mineral and/or Locality  
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