Castle Island Mine

Castle Island Mine is a past producer of barium-barite, gold, silver, lead in Petersburg, Alaska, in USGS's medium output class. USGS records production from 1963 to 1980. It is one of 27 historic gold producers USGS lists in Petersburg, and number 1 when they are sorted by output class.

Facts

USGS status
Past producer
Output class
medium (USGS class)
Commodities
Barium-Barite, Gold, Silver, Lead, Zinc, Copper
Production years
1963 to 1980
Discovered
1925
County
Petersburg
State
Alaska
Land status (BLM data)
Not mapped in the BLM land dataset
USGS record
10100940

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Land status comes from the BLM Surface Management Agency dataset and can be out of date.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.