USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Yavapai County
Cornucopia Mine
Unconfirmed Gold Underground
Key facts
- State
- Arizona
- County
- Yavapai
- Mining district
- Groom Creek District
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Gold
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former underground Au-Ag-Cu mine. Produced 1902-1941. Mineralization is a vein deposit with a tabular ore body hosted in Green Gulch Volcanics. Ore control was faulting, igneous activity, especially dike emplacement. Ore concentration was oxidatio…
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- USGS MRDS working type: Underground
- MRDS work_type documents underground workings: Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
USGS source data documents underground workings for this record.
History & operations
Historical record
- Development status: Past Producer
Operators / organizations
- George French , O. W. Walker And W. G. Ghofawger · Historical operator
- J. I. Gardner · Source-reported owner
Commodities & minerals
Reported minerals
- Pyrite
- Quartz
- Pyrite
Access & recent conditions
- Land
- unknown
Community reports
No community field reports yet.
I Visited This MineSources & evidence
Arizona Geological Survey / ADMMR
Type: Historical mine documents
Record: 1 historical document
Supports:
- historical mine identity
- historical mine documentation
Historical documentation does not imply current access or open workings.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 135239
Supports:
- locality identity
- reported minerals (1)
A Mindat locality match does not by itself establish underground workings.
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