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Viloco Mine (Araca Mine), Loayza Province, La Paz, Bolivia

This page kindly sponsored by Keith Compton
Key
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Latitude & Longitude (WGS84): 16° 52' South , 67° 38' West
Latitude & Longitude (decimal): -16.86667,-67.63333
GeoHash:G#: 6mpbhcwbt
Locality type:Mine
Köppen climate type:Cwb : Subtropical highland climate or temperate oceanic climate with dry winters


Peribatholithic cassiterite veins. Still actively mined. "Viloco" and "Araca" ar more-or-less interchangeable names for this locality. This is the only tin mine in Bolivia that occasionally produces transparent cassiterite of facettable quality.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Viloco Mine (Araca mine), Loayza Province, La Paz Department, Bolivia
Viloco Mine, Loayza Province, La Paz Department, Bolivia

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

27 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Arsenopyrite
Formula: FeAsS
Reference: Alfredo Petrov specimens; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Bismuth
Formula: Bi
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Bismuthinite
Formula: Bi2S3
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Cassiterite
Formula: SnO2
Reference: Min Rec (1977) 8:52-57; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Chalcopyrite
Formula: CuFeS2
Reference: Alfredo Petrov specimens; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Reference: Alfredo Petrov specimens; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
'Feldspar Group'
Reference: Ahlfeld, F. & Schneider-Scherbina, A. (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia.
Ferberite
Formula: FeWO4
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Reference: No reference listed
Goethite
Formula: α-Fe3+O(OH)
Reference: Min Rec (1977) 8:52-57
Halite
Formula: NaCl
Reference: Kelly, Wm.C. and Turneaure, F.S. (1970) Mineralogy, paragenesis and geothermometry of the tin and tungsten deposits of the eastern Andes, Bolivia. Economic Geology, 65, #6, 609-680.
Hematite
Formula: Fe2O3
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Löllingite
Formula: FeAs2
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Kelly, Wm.C. and Turneaure, F.S. (1970) Mineralogy, paragenesis and geothermometry of the tin and tungsten deposits of the eastern Andes, Bolivia. Economic Geology, 65, #6, 609-680.; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Molybdenite
Formula: MoS2
Reference: No reference listed
'Monazite'
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Ahlfeld, F. & Schneider-Scherbina, A. (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia.
Pyrite
Formula: FeS2
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Pyrrhotite
Formula: Fe7S8
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Quartz
Formula: SiO2
Reference: Min Rec (1977) 8:52-57; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Rutile
Formula: TiO2
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Scheelite
Formula: Ca(WO4)
Reference: Ahlfeld, F. & Schneider-Scherbina, A. (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia.; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Siderite
Formula: FeCO3
Reference: Min Rec (1977) 8:52-57; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
'Silesite'
Reference: Pauly, A. (1926) Centralblatt fuer Mineralogie, 44.
Sphalerite
Formula: ZnS
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Stannite
Formula: Cu2FeSnS4
Reference: Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz); Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Tin
Formula: Sn
Reference: Alfredo Petrov & Jaroslav Hyrsl collections
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Alfredo Petrov specimens; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Ahlfeld, F. & Schneider-Scherbina, A. (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia.; Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3
Zircon
Formula: Zr(SiO4)
Reference: Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Bismuth'1.CA.05Bi
'Tin'1.AC.10Sn
Group 2 - Sulphides and Sulfosalts
'Acanthite'2.BA.35Ag2S
'Arsenopyrite'2.EB.20FeAsS
'Bismuthinite'2.DB.05Bi2S3
'Chalcopyrite'2.CB.10aCuFeS2
'Löllingite'2.EB.15aFeAs2
'Molybdenite'2.EA.30MoS2
'Pyrite'2.EB.05aFeS2
'Pyrrhotite'2.CC.10Fe7S8
'Sphalerite'2.CB.05aZnS
'Stannite'2.CB.15aCu2FeSnS4
Group 3 - Halides
'Halite'3.AA.20NaCl
Group 4 - Oxides and Hydroxides
'Cassiterite'4.DB.05SnO2
'Ferberite'4.DB.30FeWO4
'Goethite'4.00.α-Fe3+O(OH)
'Hematite'4.CB.05Fe2O3
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Quartz'4.DA.05SiO2
'Rutile'4.DB.05TiO2
Group 5 - Nitrates and Carbonates
'Siderite'5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Ferrimolybdite'7.GB.30Fe2(MoO4)3 · nH2O
'Scheelite'7.GA.05Ca(WO4)
Group 9 - Silicates
'Chamosite'9.EC.55(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
'Kaolinite'9.ED.05Al2(Si2O5)(OH)4
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
'Zircon'9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Feldspar Group'-
'Monazite'-
'Silesite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Tin1.1.13.1Sn
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Stannite2.9.2.1Cu2FeSnS4
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Löllingite2.12.2.9FeAs2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Cassiterite4.4.1.5SnO2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX
Halite9.1.1.1NaCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Ferberite48.1.1.2FeWO4
Scheelite48.1.2.1Ca(WO4)
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Hydrated Normal Molybdates and Tungstates
Ferrimolybdite49.2.1.1Fe2(MoO4)3 · nH2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Chamosite71.4.1.7(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Feldspar Group'-
Kaolinite-Al2(Si2O5)(OH)4
'Monazite'-
'Silesite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
H FerrimolybditeFe2(MoO4)3 · nH2O
H Goethiteα-Fe3+O(OH)
H KaoliniteAl2(Si2O5)(OH)4
H MuscoviteKAl2(AlSi3O10)(OH)2
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C SideriteFeCO3
OOxygen
O CassiteriteSnO2
O Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
O FerberiteFeWO4
O FerrimolybditeFe2(MoO4)3 · nH2O
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O MagnetiteFe2+Fe23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O RutileTiO2
O ScheeliteCa(WO4)
O SideriteFeCO3
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
O ZirconZr(SiO4)
NaSodium
Na HaliteNaCl
MgMagnesium
Mg Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
AlAluminium
Al Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Al KaoliniteAl2(Si2O5)(OH)4
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Si KaoliniteAl2(Si2O5)(OH)4
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si ZirconZr(SiO4)
SSulfur
S AcanthiteAg2S
S ArsenopyriteFeAsS
S BismuthiniteBi2S3
S ChalcopyriteCuFeS2
S MolybdeniteMoS2
S PyriteFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
S StanniteCu2FeSnS4
ClChlorine
Cl HaliteNaCl
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca ScheeliteCa(WO4)
TiTitanium
Ti RutileTiO2
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Fe FerberiteFeWO4
Fe FerrimolybditeFe2(MoO4)3 · nH2O
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe LöllingiteFeAs2
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe SideriteFeCO3
Fe StanniteCu2FeSnS4
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
CuCopper
Cu ChalcopyriteCuFeS2
Cu StanniteCu2FeSnS4
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As LöllingiteFeAs2
ZrZirconium
Zr ZirconZr(SiO4)
MoMolybdenum
Mo FerrimolybditeFe2(MoO4)3 · nH2O
Mo MolybdeniteMoS2
AgSilver
Ag AcanthiteAg2S
SnTin
Sn CassiteriteSnO2
Sn StanniteCu2FeSnS4
Sn TinSn
WTungsten
W FerberiteFeWO4
W ScheeliteCa(WO4)
W Wolframite(Fe2+)WO4 to (Mn2+)WO4
BiBismuth
Bi BismuthBi
Bi BismuthiniteBi2S3

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

Ordovician
443.8 - 485.4 Ma



ID: 3192909
Paleozoic sedimentary rocks

Age: Ordovician (443.8 - 485.4 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998) International Strategic Mineral Issues Summary Report - Tungsten. US Geological Survey Circular 930-O.
Petrov, A. et al (2001) A Guide to Mineral Localities in Bolivia, Mineralogical Record 32(6) 457-482.
Artiaga, D., Torres, B., Torró, L., Tauler, E., Melgarejo, J. C., & Arce, O. R. (2013) The Viloco Sn-W-Mo-As deposits, Bolivia: geology and mineralogy. pp 1239-1242 12th SGA Meeting Vol 3

Localities in this Region
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Bolivia

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