Colorado · Clear Creek County
Past Producer
Big Forty
Clear Creek County, Colorado, United States
Gold
Silver
⌖ Show on map
USGS source ↗
Commodities
Primary
Gold
Tertiary
Silver
Commodity type
M
Materials
Ore minerals
Pyrite
Gangue
Quartz
Economic & production
Development status
Past Producer
Identification
Deposit ID
10263821
Region
NA
Data score
D
Coordinates
39.71169, -105.58839
References
USGS PP 319, p. 50USGS PP 63, p. 376