Mine detail: Mammoth-Good Hope Mine

Previously called 'Unpatented Claims: Wall StreetWar Eagle, MS 10910Humming Bird, MS 10910Iron Clad, MS 10910Mammoth Chimney, MS 12454Good Hope, MS 12456Humboldt, MS 16392CarberrySparLittle La VetaGood Hope MineMammoth Chimney MineMill Site Lode, MS 19920Camp BirdSunny SideLast HopePatented Claims: Vulcan, MS 10909Rose Bud, MS 10910'

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Location

Lat / long:

38.34306, -107.00729

Resource(B)

Primary:	Gold, Silver
Secondary:	Sulfur, Copper
Tertiary:	Bismuth, Mercury, Vanadium, Tellurium, Lead, Zinc, Selenium
Ore:	Chalcopyrite, Copper, Galena, Gold, Petzite, Rickardite, Sphalerite, Sulfur, Sylvanite
Gangue:	Chlorite, Coloradoite, Jasper, Limonite, Magnetite, Pyrrhotite, Quartz, Roscoelite, Sericite, Tetradymite
Discovery year:	1894

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1898
Last production ended:	1983

Geology

Host rock:	Dubois Greenstone--Felsite And Felsite Porphyry;Dubois Greenstone--Quartzite
Host type:	Schist
Associated rock:	Granite Of Tolvar Peak;Quartz Vein;Carbonatite
Associated 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)
Alteration processes:	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)

References

MRDS	D011133
DEP	10014387
Reference	{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}
Reporter	Schwochow, Stephen D.