La Paz
Producer

Viloco Mine

La Paz, Bolivia
TinTungstenArsenicZincCopperMolybdenum
⌖ Show on mapUSGS source ↗
Commodities
PrimaryTin
SecondaryTungsten
TertiaryArsenic, Zinc, Copper, Molybdenum
Commodity typeM
Deposit
Deposit typeVein
Model77: Sn-polymetallic vein
Deposit sizeM
WorkingsUnderground
Ore controlBest Ore Found In Vein Intersections Within Metamorphosed Sandstone. When Veins Pass Into Hornfelsed Shale, They Branch And Become Sterile.
Materials
Ore mineralsCassiterite, Chalcopyrite, Molybdenite, Scheelite, Sphalerite, Wolframite
GangueChlorite, Pyrite, Pyrrhotite, Quartz, Tourmaline
Geology
Host rockShale,Sandstone · Quimsa Cruz (Tres Cruces) Batholith
Associated rockGranite · Quimsa Cruz (Tres Cruces) Batholith
StructureOn Both Flanks Of N10-20w Viloco Syncline On Western Fringe Of The Loligo-Emio Tres Cruces Batholith
AlterationContact Metamorphism (Hornfels, Tourmaline), Silicification, Sericitization
Economic & production
Development statusProducer
Last production1985
Discovery year1902
Identification
Deposit ID10021648
MRDS IDDE00333
Alternate namesAraca
RegionSA
Data scoreC
Coordinates-16.87268, -67.63561
References
WILLIG, C.D., AND DELGADO, J., 1985, SOUTH AMERICA AS A SOURCE OF TUNGSTEN, PAPER PRESENTED AT THE THIRD INTERNATIONAL TUNGSTEN SYMPOSIUM, MADRID, SPAIN, 36 P.VALENZUELA, S.R., 1979, GEOLOGY OF THE MAIN WOLFRAM MINES IN BOLIVIA, PRIMARY TUNGSTEN ASSOCIATION, BULLETIN NO. 6, FEB. 1979, P. 8.AHLFELD, F., AND SCHNEIDER-SCHERBINA, A., 1964, LOS YACIMIENTOS MINERALES Y DE HIDROCARBUROS DE BOLIVIA: DEPARTAMENTO NACIONAL DE GEOLOGIA BOLETIN 5, P. 139-141.CLARK, A.H., AND FARRAR, E., 1973, THE BOLIVIAN TIN PROVINCE: NOTES ON THE AVAILABLE GEOCHRONOLOGICAL DATA, ECONOMIC GEOLOGY, VOL. 68, NO. 1, P. 102-106.WILLIG, C.D., AND DELGADO, J., 1985, SOUTH AMERICA AS A SOURCE OF TUNGSTEN, IN MPR PUBLISHING SERVICES LTD., (ED.), TUNGSTEN: 1985, PROCEEDINGS OF THE THIRD INTERNATIONAL TUNGSTEN SYMPOSIUM, MADRID, MAY, 1985, P. 58-85.TURNEAURE, F.S. AND WALKER, K.K., 1947, THE ORE DEPOSITS OF THE EASTERN ANDES OF BOLIVIA, THE CORDILLERA REAL, ECONOMIC GEOLOGY, VOL. 42, NO. 7, P. 595-625.GUSTAVSON ASSOC., 1992, COMPENDIUM OF THE ECONOMIC GEOLOGY OF BOLIVIAANNUAL ITEMS 1 TO 5: WILLIG, C.D., 1985, P. 24. ANNUAL ITEMS 6 TO 8: GUSTAVSON ASSOC. (1992). CUM ITEM 1: VALENZUELA, S.R., 1979, P. 8. CUM ITEM 2: AHLFELD AND SCHNEIDER-SCHERBINA (1964), P. 141. CUM ITEMS 3-4: MINISTRY OF MINES.