Alaska
Past Producer
Jumbo Mine
Alaska, United States
Gold
Silver
Copper
Iron
Zinc
Molybdenum
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USGS source ↗
Commodities
Primary
Gold, Silver, Copper
Tertiary
Iron, Zinc, Molybdenum
Commodity type
M
Deposit
Deposit type
Contact Metasomatic
Deposit size
S
Workings
Surface/Underground
Ore control
Ore Body At Contact
Materials
Ore minerals
Chalcopyrite, Magnetite, Specularite, Sphalerite
Gangue
Epidote, Garnet, Scapolite, Wollastonite
Geology
Host rock
Limestone
Economic & production
Development status
Past Producer
First production
1907
Last production
1919
Discovery year
1897
Identification
Deposit ID
10000129
MRDS ID
A010160
Region
NA
Data score
B
Coordinates
55.25251, -132.62124
References
USGS BULL 347, P.99-102.USGS PROFESSIONAL PAPER 87, P.58-61, 106-107.USBM REPORT OF INVESTIGATIONS, 3952.USGS PROFESSIONAL PAPER 251.USGS BULL 1082-C, P.80.USGS MF 433.USGS OF 78-869, P. 103-105.ADGGS GEOLOGIC REPORT 48, P. 36-37.