USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · Sierra County
Poker Flat Drift Prospect
Mindat Confirmed Gold Mixed Underground / Surface 1 mapped shaft 4 mapped adits
Key facts
- State
- California
- County
- Sierra
- Development status
- Past Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Gold
- Verification
- Mindat Confirmed
Also known as
- West Yuba Rare Ii Area
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A placer Au occurrence/prospect located in sec. 10, T21N, R10E, MDM, 0.1 km (0.1 mile) ESE of Poker Flat, along Canyon Creek, between Cleghorn Ravine and China Ravine, on National Forest land. MRDS database stated accuracy for this location is 10 meter…
Additional documented workings
-
Drift
— documented in 1 source record.
Mindat -
Shaft
— documented in 1 source record.
USGS Historical Topographic Mine Features
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 1 shaft symbol
- 4 adit symbols
- Shaft : Mt. Fillmore , 1951
View individual source records (4)
Every underlying record used to build the summary above, for research/verification use.
-
Drift
Documented in Mindat locality data. Evidence: A placer Au occurrence/prospect located in sec. 10, T21N, R10E, MDM, 0.1 km (0.1 mile) ESE of Poker Flat, along Canyon Creek, between… -
Shaft
Mapped on historical USGS topographic data (Mine Shaft). Historical map features may no longer exist in the field.
- Derived from MRDS oper_type (existing operation): Surface-Underground
- MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Surface-Underground · oper_type
Verification
Mindat Confirmed
Mindat locality corroborates underground workings.
Why confirmed?
Mindat locality corroborates underground workings.
Why it's listed
Source records document both underground and surface mining.
History & operations
Historical record
- Development status: Past Producer
Commodities & minerals
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 (4)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 93536
Supports:
- locality identity
- underground workings
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