| Lat / long: | 26.13364, -105.5005 |
| Primary: | Mercury |
| Secondary: | Gold |
| Tertiary: | Copper |
| Discovery year: | 1932 |
| Operation type: | Unknown |
| Deposit type: | FRACTURE FILLINGS, VEINLETS, DISSEMINATIONS |
| Production size: | Small |
| Development status: | Past Producer |
| Last production ended: | 1943 |
| Structure: | THREE SETS OF POST-RHYLOITE NORMAL (?) FAULTS. THE YOUNGEST STRIKES N, DIPS VERTICALLY AND THEY HAVE OFFSETS OF 1* OF METERS. OLDER FAULTS RUN NE AND E. ALL ORE NEAR FAULTS. |
| Alteration processes: | PATCHY SILICIFICATION PREDATING FAULTING, RELATED TO RHYOLITE ERUPTIVES. ONLY OCCASIONALLY CONTROLS ORE. |
| MRDS | MX09002 |
| DEP | 60001188 |
| Reference | {Deposit:: GALLAGHER, DAVID, AND PEREZ S., R., 1946, GEOLOGY OF THE CUARENTA MERCURY DISTRICT, STATE OF DURANGO, MEXICO: U.S. GEOLOGICAL SURVEY BULLETIN 946-F, P. 115-168.}{Deposit:: PEREZ SILICEO, R. AND GALLAGHER, D., 1947, LA GEOLOGIA DE LA REGION MERCURIAL DE EL CUARENTA, MUNICIPIO DE SAN BERNARDO, ESTADO DE DURANGO: CONSEJO DE RECURSOS NATURALES NO RENOVALLES, BOL. 13, 21 PP.} |