Our American Eagle & Golden Eagle Placer Claim is located in the Johnsville Mining District that is located in south-central Plumas County. This area is both a lode and placer gold district, and is at the north end of a major belt of gold mineralization that extends to the south to Sierra City District in Sierra County. This area was first placer mined in 1849-1850, and the discovery of the Eureka quartz vein in 1851 brought many miners to the region, and the area became quickly claimed up. Considerable amounts of course gold were recovered from placer claims, and high-grade ore was recovered from lode claims during the earlier years. A number of major fires burned through the area destroying parts of Johnsville and local mines and because of this, the total output for the local mines is unknown, although it is estimated that the production was somewhere between $10-$20 million.
Geology- A variety of different rocks make up this area, including slate, schist, quartzite, limestone, metadacite, quartz porphyry and greenstone. Much of the central portion of the area is covered with glacial detritus. A number of patches of Tertiary gravels yielded gold in the early days. There are a number of north and northwest-trending quartz veins and several wide complex systems of quartz veins. The individual veins usually are only a few feet thick. The veins contain free gold and often abundant pyrite and varying amounts of galena, chalcopyrite, and arsenopyrite. Milling-grade ore contained from a few dollars to more than one ounce per gold ton.