Mine detail: Yankee Fork District

Previously called ''

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Location

Lat / long:

44.37459, -114.67903

Resource(M)

Primary:	Gold, Silver
Tertiary:	Copper, Zinc, Lead
Discovery year:	1870

Production

Operation type:	Unknown
Deposit type:	VEIN, SHEAR ZONE CHIMNEY OR STOCK
Production size:	Medium
Development status:	Past Producer
First production started:	1870

Geology

Structure:	PORPHYRY DIKES; BROAD ANTICLINE IN CHALLIS VOLCANICS, STRIKES N 40 DEG E; FOLDED PALEOZOIC ROCKS
Alteration processes:	SERICITIZATION, WALL ROCK SILICIFICATION

References

MRDS	W002480
DEP	60001621
Reference	{Deposit:: UMPLEBY, J.B., 1913, SOME ORE DEPOSITS IN NORTHWESTERN CUSTER CO.: USGS BULL. 539, P. 76-89}{Deposit:: ANDERSON, A.L., SILVER-GOLD DEPOSITS OF THE YANKEE FORK DISTRICT, CUSTER COUNTY, IDAHO: IDAHO BUR. OF MINES AND GEOL. PAMPH 83, 37, 1949}