USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Cochise County
Middlemarch Mine
Unconfirmed Copper Underground 2 mapped shafts 3 mapped adits
Key facts
- State
- Arizona
- County
- Cochise
- Mining district
- Middle Pass District
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Copper
- Verification
- Unconfirmed
Also known as
- Missouri
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former small underground Cu-Zn-Ag-Au-Pb-Mo-W mine located in the center of sec. 12, T.18S., R.23E. Discovered 1895. First produced 1895. Owned at times, or in part, by the Middlemarch Copper Co. and the Arizona Middlemarch Copper Co. Mineralizatio…
Additional documented workings
-
Shaft
— documented in 1 source record.
USGS Historical Topographic Mine Features
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 2 shaft symbols
- 3 adit symbols
- Shaft : Cochise Stronghold , 1985
View individual source records (3)
Every underlying record used to build the summary above, for research/verification use.
-
Shaft
Mapped on historical USGS topographic data (Mine Shaft). Historical map features may no longer exist in the field.
- 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
Commodities & minerals
Reported minerals
- Andradite
- Chlorite
- Epidote
- Grossularite
- Quartz
- Wollastonite
- Chalcanthite
- Chalcocite
View all 40 reported minerals
- Andradite
- Chlorite
- Epidote
- Grossularite
- Quartz
- Wollastonite
- Chalcanthite
- Chalcocite
- Chalcopyrite
- Covellite
- Galena
- Malachite
- Pyrite
- Pyrrhotite
- Scheelite
- Sphalerite
- Andradite
- Augite
- Cerussite
- Chalcanthite
- Chalcocite
- Chalcopyrite
- Chamosite
- Chlorite Group
- Clinozoisite
- Covellite
- Epidote
- Galena
- Garnet Group
- Goethite
- Grossular
- Gypsum
- Hematite
- Hydrozincite
- Jarosite
- Limonite
- Malachite
- Manganese Dendrites
- Manganese Oxides
- Muscovite
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 (2)
- mapped adit symbols (3)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 32798
Supports:
- locality identity
- reported minerals (24)
A Mindat locality match does not by itself establish underground workings.
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