| Lat / long: | 37.38891, -106.69505 |
| Primary: | Silver, Lead, Zinc |
| Secondary: | Gold, Copper, Molybdenum |
| Tertiary: | Cadmium, Bismuth |
| Ore: | Chalcopyrite, Molybdenite, Pyrite, Pyrrhotite, Sphalerite |
| Gangue: | Barite, Calcite, Hematite, Limonite, Magnetite, Quartz |
| Discovery year: | 1895 |
| Operation type: | Unknown |
| Production size: | None |
| Development status: | Occurrence |
| Host rock: | Conejos Formation--Volcaniclastic Facies;Conejos Formation--Vent Facies |
| Host type: | Monzonite,Conglomerate,Volcanic Rock (Aphanitic),Volcanic Breccia (Agglomerate),Rhyodacite,Andesite |
| Associated rock: | Intrusive Rocks--Monzonite;Intrusive Rocks--Quartz Latite, Andesite, And Rhyodacite Porphyries |
| Associated type: | Monzonite,Rhyodacite,Quartz Latite,Andesite |
| Structure: | San Juan Volcanic Field, Platoro Caldera, Elwood Creek Fault Zone, Crater Creek Stock, Quartz Creek Anticline |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Alteration processes: | Zoned Alteration Observed Includes 1) Outer Chloritic Zone Of Hydrothermal Alteration With Chlorites, Carbonates, Celadonite, Montmorillonite Clays, Silica Minerals, And Zeolites Enveloping 2) Propylitic Zone Of Albite, Calcite, Chlorite, And Epidote (Derived From Plagioclase And Ferromagnesian Minerals), Enveloping 3) Silicic Zone Of Quartz Veining And Replacement; 4) Phyllic Zone Of Pyritic Quartz-Sericite Rock. Inner Potassic And Pyrogenic Zones, If Present, Not Exposed. |
| MRDS | D010620 |
| DEP | 10094659 |
| Reference | {Deposit:: LINDQUIST, A.E., 1977, METALLIC AND COAL RESOURCES, IN MINERAL RESOURCES OF THE CHAMA-SOUTHERN SAN JUAN MOUNTAINS WILDERNESS STUDY AREA, MINERAL, RIO GRANDE, ARCHULETA, AND CONEJOS COUNTIES, COLORADO: USGS OPEN-FILE REPT. 77-309.}{Deposit:: LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.}{Deposit:: COLORADO DIV. MINES INF. REPTS. (LADY BUG MINE)}{Deposit:: BLM MINERAL SURVEYS MS 9735, 9932, 10261A&B, 14164, 21517}{Deposit:: LARSEN, E.S., JR., AND CROSS, WHITMAN, 1956, THE GRANODIORITES IN THE CENTRAL PART OF THE SUMMITVILLE QUADRANGLE, IN GEOLOGY AND PETROLOGY OF THE SAN JUAN REGION, SOUTHWESTERN COLORADO: USGS PROF. PAPER 258, P. 106-108.}{Deposit:: LIPMAN, P.W., 1975, EVOLUTION OF THE PLATORO CALDERA COMPLEX AND RELATED VOLCANIC ROCKS, SOUTHESATERN SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 852.} |
| Reporter | Schwochow, Stephen D. |