| Lat / long: | -16.67547, -67.68283 |
| Primary: | Tin, Tungsten |
| Ore: | Cassiterite, Wolframite |
| Gangue: | Clay, Fluorite, Marmatite, Pyrite, Pyrrhotite, Quartz, Tourmaline |
| Discovery year: | 1850 |
| Operation type: | Unknown |
| Deposit type: | Vein |
| Production size: | Small |
| Development status: | Past Producer |
| Host type: | Slate,Quartzite |
| Structure: | On N45w Cerro Negro Anticline (Flanks Dip 25-70) Displaced By N45e Vertical Fault., N45e Vertical Fault Displaces Anticlinal Axis And Veins. |
| Alteration processes: | Alteration Halo 7 To 30 M Wide Of Strong Silicification And Disseminated Tourmaline. |
| MRDS | BL20281 |
| DEP | 10006293 |
| Reference | {Deposit:: GUSTAVSON ASSOC., 1992, COMPENDIUM OF THE ECONOMIC GEOLOGY OF BOLIVI}{Other Database:: CIMRI} |
| Reporter | Long, Keith R. |