Mine detail: Helena Mine

Previously called 'North Squire CreekBig FourClear Creek'

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Location

Lat / long:

48.14509, -121.57039

Resource(M)

Primary:	Copper, Gold, Silver
Ore:	Chalcopyrite, Pyrite
Gangue:	Quartz
Orebody form:	VEIN IN SHEAR ZONE

Production

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

Geology

Host rock:	Barlow Pass Volcanics; Squire Creek Stock And Related Intrusive Rocks;Squire Creek Stock And Related Intrusive Rocks
Host type:	Sandstone
Structure:	Intrusive Rocks Are Sheared
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Localized K-Silicate Alteration

References

MRDS	M025907
DEP	10103543
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. 85.}{Deposit:: DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 349.}{Deposit:: GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 36.}
Reporter	Andrews, David H. (Lawson, William A.), Peterson, Jocelyn A.