Mine detail: Portland No. 1

Previously called ''

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Location

Lat / long:

47.98343, -121.37065

Resource(M)

Primary:	Zinc, Gold, Silver, Copper, Lead
Tertiary:	Arsenic, Antimony
Ore:	Chalcopyrite, Galena, Sphalerite, Stibnite
Gangue:	Quartz
Orebody form:	VEIN

Production

Operation type:	Unknown
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Grotto Batholith
Host type:	Tonalite
Structure:	Fractures
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Tonalite Is Bleached

References

MRDS	MP00173
DEP	10048575
Reference	{Deposit:: JOHNSON, F.L., DENTON, D.K., IVERSON, S.R., MCCULLOCH, R.B., STEBBINS, S.A., AND STOTELMEYER, R.B., 1983, MINERAL RESOURCES OF THE GLACEIR PEAK RARE II AREA (NO. L6031), SNOHOMISH COUNTY, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 75-83, P. 28}{Reserve-Resource:: JOHNSON AND OTHERS}
Reporter	Peterson, Jocelyn A.