Plomosa Placers

Plomosa Placers is a past producer of gold, platinum in La Paz County, Arizona, in USGS's large output class. USGS records production from 1865. It is one of 343 historic gold producers USGS lists in La Paz County, and number 1 when they are sorted by output class.

Facts

USGS status
Past producer
Output class
large (USGS class)
Commodities
Gold, Platinum
Deposit type
Placer Au-PGE
Workings
Surface/Underground
Production years
from 1865
Discovered
1860
County
La Paz County
State
Arizona
Land status (BLM data)
Federal land managed by the Bureau of Land Management
USGS record
10038172

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.

This location is mapped as federal land. Public land is not an invitation to enter old workings. Ask the managing agency about access, claims and closures.