USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · Lassen County
Hayden Hill Deposit
Unconfirmed Silver Mixed Underground / Surface
Key facts
- State
- California
- County
- Lassen
- Development status
- Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Silver
- Verification
- Unconfirmed
- California DMR status
- CLOSED NO INTENT TO RESUME
- Reclamation status
- RECLAMATION IN PROGRESS
- DMR report year
- 2025
Also known as
- Golden Eagle, Providence City
Mine Location
Approximate AreaDocumented underground workings
Source classification: Underground operation documented
Specific physical workings are not yet documented in discrete records.
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 16 shaft symbols
- 9 adit 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
California state reporting
- Operator: LASSEN GOLD MINING, INC.
- Report year: 2025
Historical record
- Development status: Producer
Operators / organizations
- Lassen Gold Mining, Inc. · Historical operator
Commodities & minerals
Reported minerals
- Calcite
- Chalcedony
- Goethite
- Hematite
- Quartz
- Acanthite
- Electrum
- Gold
View all 13 reported minerals
- Calcite
- Chalcedony
- Goethite
- Hematite
- Quartz
- Acanthite
- Electrum
- Gold
- Pearceite
- Polybasite
- Pyrite
- Tennantite
- Tetrahedrite
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 (16)
- mapped adit symbols (9)
Historical mapped features may no longer exist.
California DMR Mines Online
Type: California state mining record
Record: 91-18-0012
Supports:
- operation status
- reclamation information
- reporting year
- operation type
A DMR match does not by itself prove underground workings.
Related underground mines
Golden Eagle Mine
California · Lassen County
Unconfirmed Silver Producer Mixed Underground/Surface
Historical mapped workings available