|
HOME | GE TOUR | HISTORY | PROPERTIES | LOCATIONS | USES | WORKS CITED
- Most of US gold supplies are stored at:
- Fort Knox Bullion Depository, 30 miles outside of Louisville Kentucky
- Under the supervision of the Director of the Mint
- Supply composed of Gold Bars the size of bricks (7 X 3 5/8 X 1 ¾ inches) and weigh 27.5 pounds or about 400 troy ounces
- Housed in large vault compartments
- Early production in US
- Southern Appalachians in 1792
- California Gold Rush 1849 -1850
- 1860s
- Mother Lode and Grass Valley in California
- Comstock Lode in Nevada
- By 1905
- Tonopah and Goldfield Deposits in Nevada found
- Alaskan placer deposits discovered
- Gold around the world
- World’s gold production = 3.4billion troy ounces
- 2/3rds mined in last 50 years
- 45% of world’s gold comes from
- Goldmines in the US
- Homestake mine in Lead, South Dakota
- Largest gold mine in US
- 8,000 feet deep
- 10% of US gold production since opening in 1876
- 40 million troy ounces so far!
- Carlin mine district in Nevada
- Discovered in 1962
- low grade disseminated gold deposits
- 1,500,000 troy ounces of gold produced per year
- Byproduct Gold
- Byproduct Gold comes from the mining of other ore materials. Even though gold appears in such small proportion to the other metal, so much ore is mined that gold amounts become substantial
- Porphyry Deposit at Bingham Canyon, Utah
- Largest single source of byproduct gold
- Has produced 18 million troy ounces since 1906
- World's main gold sources for 1800 onwards
- Yukon Territory (1896)
- South Dakota
- Quebec Area
- California (1848/1849)
- Colorado
- Virginia, Carolinas, Georgia, Alabama
- Rand (1886) and Orange Free State
- Urals
- Altai
- Altai
- Kolar
- Japan
- Phillipines
- W. Australia (from 1892)
- New South Wales and Victoria (1851) Australia
- New Zealand
|
|
