| Location: | Durango, Mexico, North America |
| Lat / long: | 26.13364, -105.5005 |
| dep_id: | 60001188 |
| mrds_id: | MX09002 |
| Commodity type: | metallic |
| Major mineral: | Mercury |
| Minor mineral: | Gold |
| Trace mineral: | Copper |
| Operation type: | Unknown |
| Deposit type: | FRACTURE FILLINGS, VEINLETS, DISSEMINATIONS |
| Production size: | Small ammount of material produced |
| Development status: | Past Producer |
| alteration: | PATCHY SILICIFICATION PREDATING FAULTING, RELATED TO RHYOLITE ERUPTIVES. ONLY OCCASIONALLY CONTROLS ORE. |
| conc_proc: | HYDROTHERMAL |
| ore_ctrl: | ORE-BEARING SOLUTION ROSE ALONG FAULTS AND DEPOSITED CINNABAR WHERE RETARDED BY IMPERMIABLE DIABASE DIKES; FAULT GOUGE AND SILICIFIED ZONES, ESPECIALLY IN CONGLOMERATES. |
| 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. |
| yr_lst_prd: | 1943 |
| disc_yr: | 1932 |
| References: |
- 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.
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