Mine detail: Gallic-Vulcan Group

Previously called 'Patented Claims: Gallic, MS 12227Vulcan, MS 12227Unpatented Claims: Vulcan ExtensionFairmountPolarisWedgeOrionAuroraCleonStellaAltamontReaGallic PlacerGallic Mill SiteSunshineExplorerWeatherhornGold SuperiorSilver Crest ExtensionSunshine ExtensionVulcan Mill SiteVulcan Placer'

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Location

Lat / long:

38.01361, -107.48035

Resource(M)

Primary:	Gold, Silver
Secondary:	Lead, Copper
Tertiary:	Zinc, Antimony, Tellurium
Ore:	Chalcopyrite, Galena, Gold, Hessite, Pyrite, Silver, Sphalerite, Sylvanite
Gangue:	Apatite, Barite, Calcite, Fluorite, Kaolinite, Quartz
Discovery year:	1883

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
Last production ended:	1935

Geology

Host type:	Monzonite,Quartz Latite
Associated rock:	Eureka Member Of Sapinero Mesa Tuff;Biotite-Quartz Latite Of Burns Member Of Silverton Volcanics;Intrusive Rocks--Monzonite Porphyry Zr Fiss. Track 23.3
Associated type:	Monzonite,Rhyolite,Quartz Latite
Structure:	San Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera, Eureka Graben
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D011610
DEP	10014718
Reference	{Deposit:: IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL. 478, P. 72-74}{Deposit:: SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 75, NO. 7, P. 963-991.}{Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPT.}{Deposit:: BLM MINERAL SURVEY MS 12227}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPT.}
Reporter	Schwochow, Stephen D.