USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Cochise County
Free Coinage Mine
Unconfirmed Gold Underground
Key facts
- State
- Arizona
- County
- Cochise
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Gold
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former small surface and underground Ag-Au-Mn mine located in South-central sec. 9 & North-central sec. 16, T.20S., R.22E, about 500 feet S of Merrimac adits, approximately 2 miles SW of Tombstone. First produced 1920. Mineralization is a replacem…
Additional documented workings
-
Adit
— documented in 1 source record,
noting 500 ft.
Mindat
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 17 shaft symbols
View individual source records (3)
Every underlying record used to build the summary above, for research/verification use.
-
Adit
Documented in Mindat locality data. Evidence: ocated in South-central sec. 9 & North-central sec. 16, T.20S., R.22E, about 500 feet S of Merrimac adits, approximately 2 miles SW o…
- Derived from MRDS oper_type (existing operation): Underground
- MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Underground · oper_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
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 (17)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 32959
Supports:
- locality identity
A Mindat locality match does not by itself establish underground workings.
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Documented adit evidence