| Location: | Gunnison County, Colorado, United States, North America |
| Lat / long: | 38.34306, -107.00729 |
| dep_id: | 10014387 |
| mrds_id: | D011133 |
| Commodity type: | metallic and nonmetallic |
| Major mineral: | Gold, Silver |
| Minor mineral: | Sulfur, Copper |
| Trace mineral: | Bismuth, Mercury, Vanadium, Tellurium, Lead, Zinc, Selenium |
| Operation type: | Unknown |
| Production size: | Small ammount of material produced |
| Development status: | Producer |
| ore: | Chalcopyrite, Copper, Galena, Gold, Petzite, Rickardite, Sphalerite, Sulfur, Sylvanite |
| gangue: | Chlorite, Coloradoite, Jasper, Limonite, Magnetite, Pyrrhotite, Quartz, Roscoelite, Sericite, Tetradymite |
| alteration: | Oxidation Of Pyrite To Fe Oxides And Native S; Sericitization And Chloritization Of Schist Near Mineralized Zone; Supergene Alteration Of Cu Sulfide To Covellite; Supergene Alteration Of Tellurides To Native Te And Cu Telluridess (Rickardite, Weissite, Vulcanite) |
| conc_proc: | Massive Sulfide Originally Deposited In Submarine Volcanic Exhalite Environment And Concentrated In Stratabound Sequence During Metamorphism. Precious Metals And Tellurides In Silica Vein System Reconcentrated By Later Hydrothermal Activity Along Structural/Stratigraphic Discontinuity. |
| ore_ctrl: | Massive Sulfide Deposition Controlled By Original Depositional Environment In Submarine Volcanic Sequence. Precious Metals And Tellurides Localized In Silica Vein System Near Hanging Wall Of Lens (Stratigraphic/Structural Discontinuity). Native S/Se Localized In Oxidized Portion Of Sulfide Lens Above Present Water Table. |
| Reporter: | Schwochow, Stephen D. |
| hrock_unit: | Dubois Greenstone--Felsite And Felsite Porphyry;Dubois Greenstone--Quartzite |
| hrock_type: | Schist |
| arock_unit: | Granite Of Tolvar Peak;Quartz Vein;Carbonatite |
| arock_type: | Intrusive Carbonatite,Andesite,Granite |
| Structure: | Gunnison Uplift, San Juan Volcanic Field, Gunnison Gold Belt, Iron Hill Alkalic Complex, Tolvar Peak Stock |
| tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Year first produced: | 1898 |
| yr_lst_prd: | 1983 |
| disc_yr: | 1894 |
| References: |
- Deposit:: DROBACK, P.A., 1981, PROTEROZOIC SYNGENETIC MASSIVE SULFIDE DEPOSITS IN THE GUNNISON GOLD BELT, COLORADO, IN EPIS, R.C. AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P. 279-286.
- Deposit:: HARTLEY, P.D., 1976, THE GEOLOGY AND MINERALIZATION OF A PRECAMNRIAN MASSIVE SULFIDE DEPOSIT AT VULCAN, GUNNISON COUNTY, COLORADO: STANFORD UNIV. M.SC. THESIS.
- Deposit:: HARTLEY, T.D., 1983 GEOLOGY AND MINERALIZATION OF THE VULCAN-GOOD HOPE MASSIVE SULFIDE DEPOSIT, GUNNISON COUNTY, COLORADO, IN HANDFIELD, R.C., ED., GUNNISON GOLD BELT AND POWDERHORN CARBONATITE FIELD TRIP GUIDEBOOK: DREGS, P. 19-27.
- Deposit:: HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178.
- Deposit:: LAKES, ARTHUR, 1896, SKETCH OF A PORTION OF THE GUNNISON GOLD BELT, INCLUDING THE VULCAN AND MAMMOTH CHIMNEY MINES: AIME TRANA., V. 26, P. 440-448.
- Deposit:: OLSON, J.C. AND OTHERS, 1975, GEOLOGIC MAP OF THE APRING HILL CREEK QUADRANGLE, SAGUACHE COUNTY, COLORADO: USGS MAP MF-713.
- Deposit:: SHERIDAN, D.M., AND OTHERS, 1981, PRECABRIAN SULFIDE DEPOSITS IN THE GUNNISON REGION, COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., ED., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P 237-277.
- Deposit:: CAMERON, E.N., AND THREADGOLD, I.M., 1961, VULCANITE, A NEW COPPER TELLURIDE FROM COLORADO: AM, MINERALOGIST, V. 46, P. 258-268.
- Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.
- Deposit:: BLM MINERAL SURVEYS MS 10909, 10910, 12454, 12456, 16392, 19920
- Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.; USGS MINERAL RESOURCES OF U.S.; HARTLEY, 1983
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