USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · Lake County
Unconfirmed Mercury Mixed Underground / Surface
Mindat locality description
A former Hg mine located in sec. 23, T10N, R7W, MDM, 5.9 km (3.7 miles) SSE of Middletown and Mount St. Helena (not Mt Saint Helens). Started 1870. The Mirabel mine occurs in the valley of St. Helena Creek, situated nearly two-and-one-half miles so…
USGS historical topographic mapping. Features may no longer exist.
Every underlying record used to build the summary above, for research/verification use.
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Source records document both underground and surface mining.
No community field reports yet.
I Visited This MineType: Historical mine record
Supports:
Type: Historical mapped physical features
Dataset: DOI 10.5066/P9TAALR6
Supports:
Historical mapped features may no longer exist.
Type: Mineralogical locality database
Record: Mindat Locality: 27896
Supports:
A Mindat locality match does not by itself establish underground workings.
California · Napa County
Unconfirmed Mercury Past Producer Mixed Underground/Surface
Documented adit evidence
California · Napa County
Unconfirmed Mercury Occurrence Mixed Underground/Surface
Historical mapped workings available
California · Lake County
Unconfirmed Mercury Past Producer Mixed Underground/Surface
Historical mapped workings available
California · Lake County
Unconfirmed Mercury Past Producer Underground
Documented adit evidence