Mine detail: Spafford Prospect

Previously called 'Homestake Group, Homestake ProspectClaims: Homestake Nos. 1 and 2, Glory Be Lodes Nos. 1and 2,Ricky Lodes 1 Through 6, Ridge Lode No. 1'

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Location

Lat / long:

48.77232, -120.71649

Resource(M)

Primary:	Gold, Silver
Secondary:	Lead, Zinc
Tertiary:	Copper
Ore:	Covellite, Galena, Pyrite, Sphalerite
Gangue:	Calcite, Iron, Quartz
Orebody form:	VEINS IN SHEAR ZONE
Discovery year:	1956

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Harts Pass Group, Harts Pass Formation;Harts Pass Group, Harts Pass Formation;Harts Pass Group, Harts Pass Formation
Host type:	Arkose
Associated type:	Diorite
Structure:	Shear Zone
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Host Rocks Bleached, Silicified

References

MRDS	M700093
DEP	10047808
Reference	{Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 177.}{Deposit:: MOEN, W. S., 1969, MINES AND MINERAL DEPOSITS OF WHATCOM COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 57, P. 117-118.}{Deposit:: STOFFEL, K.L., AND MCGRODER, M.F., 1990, GEOLOGIC MAP OF THE ROBINSON MTN. 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-5, SCALE 1;100,000.}{Deposit:: STAATZ, M.H., WEIS, P.L., TABOR, R.W., ROBERTSON, J.F., VAN NOY, R.M., PATTEE, E.C., AND HOLT, D.C., 1971, MINERAL RESOURCES OF THE PASAYTEN WILDERNESS AREA, WASHINGTON: U.S. GEOLOGICAL SURVEY BULLETIN 1325, P. 155-158.}
Reporter	Caress, Mary E. (Evarts, Russ), Peterson, Jocelyn A.