| Lat / long: | -20.01287, -66.55363 |
| Primary: | Tin, Silver, Gold |
| Tertiary: | Zinc, Copper, Lead |
| Ore: | Cassiterite, Galena, Gold, Proustite, Sphalerite, Tetrahedrite |
| Gangue: | Alunite, Barite, Jarosite, Pyrite, Quartz |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Producer |
| Production years: | 1873-1911, 1934-1936 |
| Host rock: | Llallagua;Cuzco |
| Host type: | Quartzite,Siltstone,Tuff,Quartz Latite |
| Structure: | N30-40w Syncline, Diatreme (Vent For Tuff), Quartz Latite Volcanic Dome Intruding Margin Of Diatreme |
| Alteration processes: | Alteration Zone 3 Km Long And 1.7 Km Wide Oriented Ne-Sw With Central Zones Of Sericitization And Disseminated Pyrite, Zoning Outward Through Argillic To Propylitic. Silicification Is Limited To Vein Selvages, Silurian Sediments, And Zones Of Argillic Alteration, Particularly In The Upper Part Of The Volcanic Dome. The Diatreme Is Stongly Propylitized. |
| MRDS | BL20307 |
| DEP | 10006312 |
| Reference | {Deposit:: UNDP, 1989, EL ASIENTO: YACIMIENTOS DE METALES PRECIOSOS DE BAJA LEY Y GRAN VOLUMEN: PROYECTO BOL/87/12 FOLLETO TECNICO PROMOCIONAL, 14 P.}{Deposit:: ESPINOZA, O.A., 1989, INFORME GEOLOGICO MINERO DEL ASIENTO: MINTEC, INFORME INTERNO.}{Deposit:: GUSTAVSON ASSOC., 1992, COMPENDIUM OF THE ECONOMIC GEOLOGY OF BOLIVIA}{Deposit:: PINTO V., J., 1988, MODELO CONCEPTUAL Y EVALUACION DE METALES PRECIOSOS EL ASIENTO, POTOSI, BOLIVIA: UNDP PROYECTO BOL/87/012 INFORME INTERNO, 30 P.}{Deposit:: AHLFELD, F., AND SCHNEIDER-SCHERBINA, A., 1964, LOS YACIMIENTOS MINERALES Y DE HIDROCARBUROS DE BOLIVIA: DEPARTAMENTO NACIONAL DE GEOLOGIA BOLETIN 5, P. 297.}{Deposit:: UNITED NATIONS DEVELOPMENT PROGRAM STUDY 1988-1989 (PINTO, 1988; UNDP, 1989}{Other Database:: CIMRI} |
| Reporter | Guerra, Edwin, Long, Keith R. |