Colosseum Mine

Colosseum Mine is a past producer of gold, silver, copper, lead in San Bernardino County, California, in USGS's large output class. USGS gives a discovery year of 1865. It is one of 691 historic gold producers USGS lists in San Bernardino County, and number 4 when they are sorted by output class.

Facts

USGS status
Past producer
Output class
large (USGS class)
Commodities
Gold, Silver, Copper, Lead, Arsenic, Antimony, Zinc
Discovered
1865
County
San Bernardino County
State
California
Land status (BLM data)
Private land or land not mapped as public
USGS record
10310702

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Land status comes from the BLM Surface Management Agency dataset and can be out of date.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

55 other USGS gold sites within 12 miles. The San Bernardino County page lists the biggest.