Modoc Plateau Province

The only sources of commercial amounts of gold in the Modoc Plateau province of northeastern California have been the Hayden Hill district in north-central Lassen County and the Winters district in southwest Modoc County. In both districts the gold-bearing veins occur in volcanic rocks of Tertiary age. The mines at Hayden Hill have yielded several million dollars worth of gold, but the Winters district has been the source of less than $200,000. A few small gold prospects occur elsewere in this region.