Alaska
Past Producer

Big Four Mineral Cr. Mine

Alaska, United States
GoldLeadZinc
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
TertiaryLead, Zinc
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formQUARTZ VEIN
Ore controlFracture Control
Materials
Ore mineralsGalena, Gold, Sphalerite
GanguePyrite, Quartz
Geology
Host rockSlate · Valdez Group
StructureVeins Are Offset By Faults Trending N 10 To 20 E
Tectonic settingChugach Terrane
Economic & production
Development statusPast Producer
First production1914
Last production1939
Discovery year1911
Identification
Deposit ID10000813
MRDS IDA011463
RegionNA
Data scoreB
Coordinates61.22627, -146.34895
References
USGS BULL 520, P. 125USGS BULL 622, P. 153, 164-165USGS BULL 880-A, P. 23-24USGS MF-438, LOC. 22USGS OFR 80-892B, LOC. 19BAG-OFR-80-892B-19