Forty Five Mine

Forty Five Mine is a past producer of lead, gold, silver, zinc in Snohomish County, Washington, in USGS's medium output class. USGS gives a discovery year of 1891. It is one of 85 historic gold producers USGS lists in Snohomish County, and number 2 when they are sorted by output class.

Facts

USGS status
Past producer
Output class
medium (USGS class)
Commodities
Lead, Gold, Silver, Zinc, Copper, Tungsten
Deposit type
Polymetallic veins
Discovered
1891
County
Snohomish County
State
Washington
Land status (BLM data)
Private land or land not mapped as public
USGS record
10036800

Source: USGS Mineral Resources Data System (retrieved 2026-10-13). The database was last updated around 2011, positions can be approximate, and "producer" does not mean a mine is operating today. "Output class" is a code whose meaning changed over the years, so compare sites inside this data and do not read it as tonnage.

Land status comes from the BLM Surface Management Agency dataset and can be out of date. Check ownership before you go near any mine site.