Mine detail: Golconda Mine

Previously called 'Margaret Property'

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Location

Lat / long:

46.34731, -122.07091

Resource(M)

Primary:	Gold
Secondary:	Copper
Tertiary:	Zinc, Lead
Ore:	Chalcopyrite, Galena, Gold, Pyrite, Sphalerite
Gangue:	Quartz
Orebody form:	VEIN

Production

Operation type:	Underground
Deposit type:	porphyry Cu
Production size:	Small
Development status:	Prospect

Geology

Host rock:	Spirit Lake Pluton, Main Phase
Host type:	Quartz Monzonite
Tectonic:	Cascade Volcanic Arc

References

MRDS	M700170
DEP	10047843
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. 155.}{Deposit:: MOEN, W.S., 1977, ST HELENS AND WASHOUGAL MINING DISTRICTS OF THE SOUTHERN CASCADES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 60, P. 17 - 26. (71 p.)}{Production:: MOEN, 1977}
Reporter	Caress, Mary E. (Evarts, Russ), Peterson, Jocelyn A., Ridenour, James, Causey, J. Douglas