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El Quemado District, Nevados de Palermo, Salta, Argentina

Latitude: 24°47'4"S
Longitude: 66°21'43"W
Distrito de El Quemado, Nevados de Palermo, Salta, Argentina

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.
"El Quemado", Salta mining district:
In pegmatites of the mining district "El Quemado", with the following mines: "El Peñón", "La Elvirita", "Santa Elena" and "El Quemado". These pegmatites 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". 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
Actinolite
Albite
'Albite-Anorthite Series'
Alluaudite
Amblygonite
'Apatite'
Arrojadite-(KFe)
Autunite
Bederite (TL)
Beryl
'Biotite'
Bismite
Bismuth
Bismuthinite
Bismutite
Bismutotantalite
Brazilianite
Cassiterite
Chalcopyrite
'Chlorite Group'
'Columbite'
Columbite-(Mn)
Covellite
Elbaite
Emplectite
Eosphorite
Fairfieldite
Fluorite
Fluornatromicrolite
Gahnite
'Garnet'
'Gummite'
Hambergite
Heterosite
Hodrušite
Ilmenite
Ingodite
Ixiolite
'Joséite-A'
'Joséite-B'
'Klaprothite'
Laueite
Lepidolite
Leucophosphite
'Limonite'
Lithiophilite
Magnetite
'Manganomelane'
Microcline
Microlite Group
var: Bismutomicrolite (of Hogarth 1977)
var: Uranmicrolite (of Hogarth 1977)
Mitridatite
Molybdenite
Monazite-(Ce)
Montebrasite
Muscovite
Phosphosiderite
Pyrite
Quartz
Rockbridgeite
Rutile
Schorl
Siderite
Sphalerite
Spodumene
'Stilbite'
'Tantalite'
Tantalite-(Mn)
'Tapiolite'
Tapiolite-(Fe)
Tennantite
var: Annivite

Tetradymite
Tetrahedrite
var: Bismuthian Tetrahedrite

Torbernite
'Tourmaline'
Triphylite
Triplite
Uraninite
Ushkovite
'Wad'
Zircon


113 entries listed. 61 valid minerals. 1 type locality (valid mineral).

Localities in this Region

Argentina

The above list 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.

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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