USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Nevada · Elko County
Johnson Mine & Group
Mindat Confirmed Copper Underground 1 mapped shaft 1 mapped adit
Key facts
- State
- Nevada
- County
- Elko
- Mining district
- Contact (48)
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Copper
- Verification
- Mindat Confirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
Copper Structure: Granodiorite Stock With Assoc. Faults, Fractures Alteration: Oxidation Deposit: Tunnel shows 6 to 18 inches of banded & crushed partly mineralized vein material for much of its length. Shaft is on the granodiorite-limestone contact…
Additional documented workings
-
Adit
— documented in 1 source record.
USGS Historical Topographic Mine Features -
Shaft
— documented in 1 source record.
Mindat -
Tunnel
— documented in 1 source record.
Mindat
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 1 shaft symbol
- 1 adit symbol
- Adit : Blanchard Mtn. , 1968
View individual source records (5)
Every underlying record used to build the summary above, for research/verification use.
-
Adit
Mapped on historical USGS topographic data (Adit). Historical map features may no longer exist in the field. -
Shaft
Documented in Mindat locality data. Evidence: l shows 6 to 18 inches of banded & crushed partly mineralized vein material for much of its length. Shaft is on the granodiorite-lime… -
Tunnel
Documented in Mindat locality data. Evidence: opper Structure: Granodiorite Stock With Assoc. Faults, Fractures Alteration: Oxidation Deposit: Tunnel shows 6 to 18 inches of bande…
- USGS MRDS working type: Underground
- MRDS work_type documents underground workings: Underground · work_type
Verification
Mindat Confirmed
Mindat locality corroborates underground workings.
Why confirmed?
Mindat locality corroborates underground workings.
Why it's listed
USGS source data documents underground workings for this record.
History & operations
Historical record
- Development status: Past Producer
Operators / organizations
- Montilla Mining Co. · Source-reported owner
Commodities & minerals
Reported minerals
- Bornite
- Chalcopyrite
- Bornite
- Chalcopyrite
- commodity:Copper
- commodity:Gold
- commodity:Molybdenum
- commodity:Silver
View all 10 reported minerals
- Bornite
- Chalcopyrite
- Bornite
- Chalcopyrite
- commodity:Copper
- commodity:Gold
- commodity:Molybdenum
- commodity:Silver
- Diorite
- Quartzite
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 shaft symbols (1)
- mapped adit symbols (1)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 40967
Supports:
- locality identity
- reported minerals (8)
- underground workings
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Documented adit evidence