USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Nevada · Elko County
Big Four Mine
Unconfirmed Silver Underground
Key facts
- State
- Nevada
- County
- Elko
- Mining district
- Aura
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Silver
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
Structure: Fault Contact With Granodiorite Deposit: Replacement vein & fissures & shears located on east bank of columbia creek, 1/4 mile above columbia. Three tunnels approximately 100 feet long have been driven. Made several shipments of ore in 1908…
Additional documented workings
-
Tunnel
— documented in 1 source record,
noting 100 ft long.
Mindat
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 4 adit symbols
View individual source records (3)
Every underlying record used to build the summary above, for research/verification use.
-
Tunnel
· length 100 ft
Documented in Mindat locality data. Evidence: ent vein & fissures & shears located on east bank of columbia creek, 1/4 mile above columbia. Three tunnels approximately 100 feet lo…
- USGS MRDS working type: Underground
- MRDS work_type documents underground workings: Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
USGS source data documents underground workings for this record.
History & operations
Historical record
- Development status: Past Producer
Commodities & minerals
Reported minerals
- Chalcopyrite
- Galena
- Gold
- Sphalerite
- Chalcopyrite
- commodity:Gold
- commodity:Iron
- commodity:Lead
View all 18 reported minerals
- Chalcopyrite
- Galena
- Gold
- Sphalerite
- Chalcopyrite
- commodity:Gold
- commodity:Iron
- commodity:Lead
- commodity:Silver
- commodity:Zinc
- Copper Stain
- Diorite
- Galena
- Limestone
- Native Gold
- Pyrite
- Quartz
- Sphalerite
Access & recent conditions
- Land
- unknown
Community reports
No community field reports yet.
I Visited This MineSources & evidence
USGS Historical Topographic Mine Features
Type: Historical mapped physical features
Dataset: DOI 10.5066/P9TAALR6
Supports:
- mapped adit symbols (4)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 40856
Supports:
- locality identity
- reported minerals (14)
A Mindat locality match does not by itself establish underground workings.
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