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Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province (Bustillos Province), Potosí Department, Bolivia
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Photo: Wendy Dale
Latitude: 18°25'S
Longitude: 66°38'W
 
 
The name "Siglo Veinte", often also written "Siglo XX", means "Twentieth Century" and was given because serious mining of the tin ores began at the beginning of the century in 1901.
The mine is easily reached from Llallagua, a few minutes walk southwest from the city center.

Mineral List

'Albite-Anorthite Series'
Allophane
Alunite
'Andorite'
Anglesite
Antlerite
Arsenic
Arsenopyrite
Augelite
Azurite
Baryte
'Biotite'
Bismite
Bismoclite
Bismuth
Bismuthinite
Bismutite ?
Bornite
Boulangerite
Bournonite
Brochantite ?
Caledonite
Cassiterite
var: Wood Tin ?
Cervantite
Chalcanthite
Chalcocite
Chalcopyrite
Chalcosiderite
Childrenite
Chlorapatite
Chrysocolla
Cookeite
Copper
Cordierite
Covellite
Crandallite
Creedite
Cronstedtite
Cuprite
Cylindrite
Diadochite
Epsomite
'Evansite'
Faustite
Ferberite
Ferrivauxite (TL)
Florencite-(Ce)
Fluorapatite
Franckeite
var: Potosíite ?
Galena
Goethite
Goyazite
Greenockite
'Gumucionite'
Gypsum
Hagendorfite
Halite ?
Halotrichite
Hematite
Hinsdalite
Hisingerite
Hübnerite
Jamesonite
Jarosite
Jeanbandyite (TL)
Kaolinite
Linarite
Malachite
Marcasite
Melanterite
Mélonjosephite
Metavauxite (TL)
Miargyrite ?
'Monazite'
Monazite-(Ce)
Monazite-(La) ?
Muscovite
var: Sericite
Nacrite
Natanite
Opal
Orpiment
Orthoclase
Paravauxite (TL)
Phosphophyllite
Pickeringite
Plumbogummite
Pyrargyrite
Pyrite
Pyromorphite
Pyrrhotite
Quartz
'Quartz-beta'
Realgar
'Rhabdophane'
Rhodochrosite
Römerite
Rutile
Scheelite
Siderite
Sigloite (TL)
'Silesite'
Silver
Sphalerite
Stannite
Stibnite
Sulphur
Tenorite
Tetradymite ?
Tetrahedrite
Thorite ?
'Tourmaline'
Troilite
Tungstite
Variscite
Vauxite (TL)
Vivianite
Wavellite
Wickmanite
Wurtzite
Xenotime-(Y)
Zinkenite ?
Zircon


125 entries listed. 109 valid minerals. 6 type localities (valid minerals). 3 erroneous literature entries.

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

- Gordon, S.G. (1939): Thorium-free monazite from Llallagua, Bolivia. Academy of Natural Science, Philadelphia. 96: 279-359

- American Mineralogist (1922): 7: 107-108.

- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 938, 963, 972, 973, 975.

- Kampf, A. R. (1982): Jeanbandyite a new member of the stottite group from Llallagua, Bolivia. Mineralogical Record 13 (4), 235-239.

- Mining Annual Review (1985): 337.

- Petrov, A. & Sith B & C. (2001): A guide to Mineral Localities in Bolivia. Mineralogical Record. 32:457-482 (p. 474).

- Hyrsl, J. & A. Petrov (2006): Famous Mineral Localities: Llallagua, Bolivia. Mineralogical Record. 37: 117-162.

- Rakovan, J., and Reeder, R.J. (1994) Differential incorporation of trace elements and dissymmetrization in apatite: The role of surface structure during growth. American Mineralogist, 79, 892-903.

- Rakovan, J., and Reeder, R.J. (1996) Intracrystalline Rare Earth Element distributions in apatite: Surface structural influences on zoning during Growth. Geochim. Cosmochim. Acta, 60, 4435-4445.

- Rakovan, J., McDaniel, D.K., and Reeder R.J. (1997) Use of surface-controlled REE sectoral zoning in apatite from Llallagua, Bolivia, to determine a single-crystal Sm-Nd age. Earth and Planetary Science Letters,146, 329-336.

- Rakovan, J., M. Newville and S. Sutton (2001) Evidence of heterovalent europium in zoned Llallagua apatite using wavelength dispersive. American Mineralogist, 86, 697-700.

- Rakovan, J. (2003) Exceptional Apatites from the Siglo XX mine, Llallagua Bolivia. Tucson Mineralogical
Symposium. Mineralogical Record 34, 117-118.


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Copyright © Jolyon Ralph and Ida Chau 1993-2014. 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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