Placerville was an early mining district and camp in Elko County which may have been named for Placerville, California (Carlson, 1974); the exact location is unknown.
Carlson, 1974, p. 192
Other Names: Forty Mile Canyon, Quartz Mountain, Calico Hills
Commodities: copper, gold, silver, magnesite
Newspaper references in 1904-07 refer to claim activity in the Pocopah district east of Forty Mile Canyon in the Calico Range. The district was described as being about 4 miles by 8 miles in extent (Bullfrog-Beatty Miner, 1906). The Calico Hills are located on Nevada Test Site, west of the Wahmonie district and are north of Jackass Flats, about 6 miles north of the Cane Springs road.
Reno Evening Gazette, Dec. 1, 1904, 6:1; Bullfrog-Beatty Miner, August 17, 1906, 6:3; Quade and Tingley, 1984, p. 2
Other Names: Gabbs Valley area, North Gabbs Valley Range area
Commodities: mercury, gold, antimony, copper
Includes Fissure Ridge (the low, narrow portion of the Monte Cristo Mountains that extends southeast across the Nye-Mineral county line), the Black Hills in Mineral County to the southeast, and the northern part of the Gabbs Valley Range in the area of Poinsettia and Ramsey Springs. Originally defined to include a small area around the Poinsettia mercury mine, the district has been expanded to include numerous scattered mines in the larger Gabbs Valley area.
Bailey and Phoenix, 1944, p. 132; U.S. Bureau of Mines, 1954, p. 698; Lawrence, 1963, p. 127; Wong, 1982, table 1; Tingley, 1990, p. 75
Portuguese Mountain District
Other Names: Pancake Range mining area, Brown Summit
Commodities: silver, gold, copper
As defined by Kleinhampl and Ziony (1984), the Pancake Range area included both the Brown Summit and Silverton areas in the southern and central parts of the Pancake Range. Silverton is considered to be a separate district, and the remaining Pancake Range area, from Bradshaw Spring north to Brown Summit, is renamed Portuguese Mountain. According to Kleinhampl and Ziony (1984), the names Portuguese Mountain or Currant are locally used for properties in the Pancake Range area. Since the Currant district is to the east, Portuguese Mountain is the appropriate name for this district.
Kleinhampl and Ziony, 1984, p. 161