Mineral Resources
Mineral exploration and production in Alaska has risen sharply since 1970. The total mineral production in 1975 was estimated at $524 million, compared to an estimated $434 million in 1974. Approximately 85 percent of the 1974 total was from oil and natural gas. The increase from 1974 to 1975 was reflected by the higher price of gold, value of sand and gravel used for pipeline construction and related expansion, and an increase in production of coal, natural gas, and petroleum.
Mining was one of the principal economic activities in the Yukon Region during the first half of this century; gold, particularly placer gold, dominated. The Iditarod, Circle, and Fairbanks Mining Districts produced the greatest amounts of placer gold, while lode gold was produced from the Kantishna and Fairbanks Districts (Figure 112). Deposits containing mercury, platinum, tin, antimony, silver, lead, tungsten, molybdenum, and copper were also mined, although activity was essentially terminated by World War II and subsequent inflation.
Figure 112 | ||||
Summary of Metallic Mining Activity by Mining District—Yukon Region | ||||
Mining District | Commodities | Claim Staking |
Placer Production
|
Lode Production |
Marshall | Gold, iron, titanium, tungsten, mercury, lead, molybdenum, copper | Minor, restricted to southeast portion of district | Slightly over 99,000 ounces gold | No recorded production |
Anvik | Gold, platinum | Few recorded claims | Minor production from one deposit between 1918 to 1940 | No recorded production |
Kaiyuh | Silver, lead, molybdenum | Few recorded claims | No recorded production | Insignificant |
Iditarod | Gold, antimony, mercury, zinc, chromium, tungsten, iron, tin, zirconium, arsenic, sliver, lead, rare earth metals, thorium | Restricted to the Iditarod-Flat area and a small area along the southern boundary near DeCourcy Mountain | Gold production to 1970 was 1,336,640 ounces | 1,200 flasks of mercury recovered from the DeCourcy Mountain Mine |
lnnoko | Gold, platinum, antimony, tungsten, mercury | Fairly widespread on or near creeks in the district | 605,000 ounces gold with a small amount of by-product platinum | No recorded production |
Ruby | Gold, tin, platinum, tungsten, bismuth, iron, lead, thorium | Extensive claim staking from the Ruby Creek area southward into the Long-Poorman area | Almost 400,000 ounces gold with about 20,000 pounds by-product tin ore and a little platinum | No recorded production |
Melozitna | Gold, tin, iron, titanium, silver, lead | Intense in southcentral part of district and moderate further east along the southern boundary | About 8,000 ounces gold | Insignificant |
Hughes | Gold, tin, platinum, zinc, copper | Most activity centered around Hughes and in the Bear Creek area | Possibly up to 100,000 ounces gold | No recorded production |
Koyukuk | Gold, silver, copper, radioactive minerals, antimony, lead, manganese, palladium, nickel | Widespread and extensive throughout the district except for the southern third | 304,400 ounces of gold | Six tons of antimony ore from Nolan Creek |
Rampart | Gold, barite, garnet, iron, lead, chromium, copper, silver, tungsten, mercury, bismuth, tin, antimony, manganese | Intensive in the western part of the district | 90,000 ounces of gold | No recorded production |
Yukon Flats | Gold, iron, molybdenum, zinc | Few recorded claims | No recorded production | No recorded production |
Chandalar | Gold, iron, zinc, copper, tungsten, radioactive minerals | Moderately intense in western part of district | About 30,000 ounces gold to 1970 | Insignificant |
Sheenjek | Gold, copper, lead, zinc, silver, molybdenum, tin | Few recorded claims | No recorded production | No recorded production |
Black | Iron | Few recorded claims | No recorded production | No recorded production |
Circle | Gold, iron, zirconium, garnet, titanium, tin, radioactive minerals, copper, lead, zinc, tungsten | Widespread and intense along many streams | 733,000 ounces gold to 1970 | Insignificant |
Eagle | Gold | Widespread throughout the district | 45,280 ounces gold to 1970 | No recorded production |
Hot Springs | Gold, tin, chromium, iron, titanium, rare earth minerals, tungsten, silver, lead, copper, nickel | Widespread and intensive activity in the northeast half of the district | Over 450,000 ounces gold to 1970 with several hundred tons of by-product tin ore | No recorded production |
Kantishna | Gold, silver, antimony, lead, iron, zinc, copper, mercury, tungsten | Widespread in southern part of district | About 50,000 ounces gold | About 5,000 ounces gold with by-product silver, antimony and lead |
Bonnifield | Gold, silver, antimony, copper, iron, bismuth, lead | Widespread and numerous in central part of district | Around 41,000 ounces gold to 1970 | Small amount of gold-silver ore and a few tons of antimony ore |
Fairbanks | Gold, tungsten, silver, antimony, lead, chromium, copper, zinc, bismuth | Activity is widespread, most intense north of Fairbanks | About 7,900,000 ounces gold to 1970 | About 270,000 ounces gold to 1970 with by-product silver; over 2,500 tons of antimony ore; 60,000 tons of silver-lead ore shipped from prospect located 2 miles southwest of Pedro Dome; moderate amount of tungsten from the Stepovich Mine |
Tolovana | Gold, iron, antimony, chromium, tin, rare earth minerals, titanium, topaz, mercury, thorium, tourmaline, silver, nickel | Moderately extensive and spread throughout the center of the district and along its southern boundary near Fairbanks | About 385,000 ounces gold to 1970 | Insignificant amounts of mercury and antimony ores |
Delta River | Gold, molybdenum, copper, nickel, lead, silver, zinc, chromium | Widespread activity | Insignificant | Insignificant amount of molybdenite ore from deposit on Ptarmigan Creek |
Goodpaster | Gold, lead, antimonv | Moderate activity throughout district | Insignificant | Insignificant |
Tok | Gold, antimony, silver, copper, nickel | Moderate number of claims staked | No recorded production | Small amount of antimony ore produced from Stibnite Creek |
Chisana | Gold, silver, copper, molybdenum, iron, zinc | Widespread and fairly intense in the central and southern parts of the district | 48,300 ounces gold to 1970 | $1,870,000 in gold-silver-copper ore from the Nabesna Mine |
Fortymile | Gold, iron, titanium, barium, garnet, tin, mercury, tungsten, thorium, silver, lead, copper, zinc, antimony | Widespread and extensive in northern half of district | Approximately 505,000 ounces of combined lode and placer gold to 1970 | Approximately 505,000 ounces of combined lode and placer gold to 1970 |