Boise - Rochester Mine

Boise - Rochester Mine is a past producer of silver, gold, sulfur in Elmore County, Idaho, in USGS's medium output class. USGS records production from 1869. It is one of 84 historic gold producers USGS lists in Elmore County, and number 4 when they are sorted by output class.

Facts

USGS status
Past producer
Output class
medium (USGS class)
Commodities
Silver, Gold, Sulfur
Workings
Underground
Production years
from 1869
County
Elmore County
State
Idaho
Land status (BLM data)
Private land or land not mapped as public
USGS record
10070036

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Land status comes from the BLM Surface Management Agency dataset and can be out of date.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

Gold sites nearby

66 other USGS gold sites within 12 miles. The Elmore County page lists the biggest.