USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Nevada · Esmeralda County
Three Hills Prospect
Unconfirmed Silver Mixed Underground / Surface
Key facts
- State
- Nevada
- County
- Esmeralda
- Mining district
- (Gold Mountain District)
- Development status
- Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Silver
- Verification
- Unconfirmed
Also known as
- Tonopah Project, part of Hasbrouck-Three Hills project
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
Commodity: Ore Materials: gold Gangue Materials: quartz, adularia Deposit: The property hosts oxidized, epithermal gold-silver mineralization. It explores a disseminated epithermal, quartz-adularia-type precious metal deposit in the vicinity of histor…
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 7 shaft symbols
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- Derived from MRDS oper_type (existing operation): Surface-Underground
- MRDS oper_type documents existing underground operation (dev_stat=Producer): Surface-Underground · oper_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
Source records document both underground and surface mining.
History & operations
Historical record
- Development status: Producer
Operators / organizations
- Eastfield Resources, Ltd. · Historical operator · 2002
Commodities & minerals
Reported minerals
- Quartz
- Adularia
- Gold
- Adularia
- commodity:Gold
- commodity:Silver
- K Feldspar
- Native Gold
View all 11 reported minerals
- Quartz
- Adularia
- Gold
- Adularia
- commodity:Gold
- commodity:Silver
- K Feldspar
- Native Gold
- Quartz
- Rhyolite
- Tuff
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 (7)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 429290
Supports:
- locality identity
- reported minerals (8)
A Mindat locality match does not by itself establish underground workings.
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