Mine detail: Golden Fleece Mine

Previously called 'Hinsdale, MS 7668Golden Fleece Extension, MS 8550Hotchkiss MinePatented Claims: Golden Fleece, MS 1017Gold Ram, MS 12450Alpha, MS 8734Omega, MS 8734Enterprise, MS 8754Yellow Jacket, MS 8978Jason, MS 9118Certified Check, MS 9364Fleece Basin, MS 9364Bank of Slumgullion, MS 9364Kearsage, MS 12178Colchis, MS 12234Gold Pot, MS 12450Greek, MS 12948Necessity, MS 12948Iron Clad, MS 13393Concord, MS 13393Newbern, MS 16720Pallas, MS 7668Denver, MS 9118'

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Location

Lat / long:

37.98057, -107.30063

Resource(B)

Primary:	Silver, Gold, Copper, Lead
Secondary:	Zinc
Tertiary:	Manganese, Strontium, Tellurium, Uranium, Antimony, Bismuth, Phosphorus-Phosphates
Ore:	Altaite, Bornite, Covellite, Galena, Hessite, Krennerite, Petzite, Pitchblende, Sphalerite, Sylvanite
Gangue:	Barite, Hematite, Limonite, Quartz, Rhodochrosite
Orebody form:	IRREGULAR
Discovery year:	1874

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1875
Last production ended:	1963

Geology

Host rock:	Local Volcaniclastic Sedimentary Rocks
Host type:	Quartz Latite
Associated rock:	Quartz Latite Of Volcanics Of Uncompahgre Peak;Biotite-Quartz Latite Of Burns Member Of Silverton Volcanics;Quartz Latite Of Red Mountain;Quartz Latite Of Grassy Mountain
Associated type:	Quartz Latite
Structure:	San Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Surface Oxidation Of Fe Sulfides To Hematite And Limonite; Kaolinitization Of Feldspar In Tuff; Hypogene Alteration Of Argentiferous Cu Sulfide To Pyrargyrite, Covellite, And Bornite

References

MRDS	D011559
DEP	10014678
Reference	{Deposit:: IRVUNG, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL. 478, P. 104-111.}{Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.}{Deposit:: LIPMAN, P.W., AND OTHERS, 1976, MULTIPLE AGES OF MID-TERTIARY MINERALIZATION AND ALTERATION IN THE WESTERN SAN JUAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 71, NO. 3, P. 571-588.}{Deposit:: SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN JUAN MOUNTAINS, COLORADO: ECON. GEOLOGY. V. 75, NO. 7, P. 963-991.}{Deposit:: MINING REPORTER, 1901, THE GOLDEN FLEECE MINE, LAKE CITY, HINSDALE COUNTY: MINING REPORTER, V. 44, P. 154-155.}{Deposit:: NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 179.}{Deposit:: LARSEN, E.S., JR., AND SCHALLER, W.T., 1911, HINSDALITE, A NEW MINERAL: AM. JOUR. SCI., 4TH SER., V. 32, P. 251-255.}{Deposit:: SCHALLER, W.T., 1912, MINERALOGICAL NOTES, NO. 2: USGS BULL. 509, P. 66-69.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Deposit:: BLM MINERAL SURVEYS.}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPT.}
Reporter	Schwochow, Stephen D.