Underground mines
32
Ophir Mining District
California · 32 underground-eligible mines · USGS MRDS district assignment
Verified
0
Relationship confidence
AUTHORITATIVE (USGS dep_id)
District overview
Mining district documented in USGS MRDS for underground-eligible catalog records.
Major commodities
- Gold
- Copper
Mines in this district
Adams
California · Placer County
Unconfirmed Gold Past Producer Underground
Belvoir Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Big Pine Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
Boulder
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Butts Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
California
California · Placer County
Unconfirmed Gold Past Producer Mixed Underground/Surface
Conrad
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Crandell Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Crater Hill
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Doig Consolidated
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Eclipse Consolidated
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Eureka Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
Documented shaft evidence
Globe Consolidated
California · Placer County
Unconfirmed Copper Past Producer Underground
Gold Blossom
California · Placer County
Unconfirmed Gold Past Producer Underground
Documented shaft evidence
Grass Ravine and Workman
California · Placer County
Unconfirmed Gold Past Producer Underground
Documented shaft evidence
Green Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
Hathaway
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Hope
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Julian
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Kittler Consolidated
California · Placer County
Unconfirmed Gold Past Producer Underground
Documented shaft evidence
Little Banner Mine
California · Placer County
Unconfirmed Gold Past Producer Underground
Documented adit evidence
Lundquist
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Malmberg
California · Placer County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Mina Rica
California · Placer County
Unconfirmed Gold Past Producer Mixed Underground/Surface
Historical mapped workings available
Related districts
- Grass Valley · 63
- Nevada City · 39
- East Shasta Copper-Zinc · 32
- French Gulch · 24
- New Almaden · 20
- East Mayacmas · 20
- West Shasta Copper-Zinc · 20
- Mother Lode Belt · 19
Sources
- USGS Mineral Resources Data System (MRDS) — District assignment from USGS MRDS Districts table joined by dep_id.
No district boundary polygons are shown. Membership is not inferred from map proximity.