Mine detail: Gold Anchor Mine

Previously called 'Patented Claims: Johnny Bull, MS 596Legal Tender, MS 1838Spanking Jack, MS 7047Last Chance, MS 7047Unpatented Claims: Gold AnchorGold Anchor ExtensionLast EffortCaledoniaRainbowAlbionPrimroseCambiaInspirationOwlOwl Nos.1-4'

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Location

Lat / long:

37.71529, -108.08815

Resource(M)

Primary:	Copper, Silver
Secondary:	Zinc, Gold, Lead
Tertiary:	Molybdenum
Ore:	Galena, Molybdenite, Sphalerite
Gangue:	Kaolinite, Quartz
Discovery year:	1879

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1890
Last production ended:	1937

Geology

Host rock:	Cutler Formation
Host type:	Sandstone
Associated rock:	Hornblende Latite Porphyry And Basalt;Calico Peak Porphyry
Associated type:	Latite,Basalt
Structure:	San Juan Uplift, Paradox Basin, Rico Dome, Calico Peak Stock, Calico Peak Anticline
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Shallow But Intense Near-Surface Oxidation Of Ores

References

MRDS	D010769
DEP	10014126
Reference	{Deposit:: MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723.}{Deposit:: PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.}{Deposit:: RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 358.}{Deposit:: COLORADO DIV. MINES INF. REPTS.}{Deposit:: BLM MINERAL SURVEYS MS 596, 1838, 7047}{Deposit:: MARRS, G.O., 1925, REPORT ON THE GOLD ANCHOR GROUP OF MINES, PIONEER MINING DISTRICT, DOLORES COUNTY, COLORADO: UNPUB. ENG. REPT., 8 P.}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.}
Reporter	Schwochow, Stephen D.