USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Gila County
Independence Group
Mindat Confirmed Copper Underground 4 mapped shafts 3 mapped adits
Key facts
- State
- Arizona
- County
- Gila
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Copper
- Verification
- Mindat Confirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former underground Cu-Ag-Au mine located in the SW¼SW¼ sec. 34, T1S, R14E, about 1¼ miles E of the Pinal County line, on National Forest land. Owned by Mr. Robert Nicholas of Arizona (1943).
Additional documented workings
-
Adit
— documented in 1 source record.
USGS Historical Topographic Mine Features -
Drift
— documented in 1 source record,
noting 30 ft long, 120 ft deep.
Mindat -
Shaft
— documented in 1 source record,
noting 120 ft deep, 30 ft long.
Mindat
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 4 shaft symbols
- 3 adit symbols
- Adit : Pinal Ranch , 1948
View individual source records (5)
Every underlying record used to build the summary above, for research/verification use.
-
Adit
Mapped on historical USGS topographic data (Adit). Historical map features may no longer exist in the field. -
Drift
· length 30 ft
Documented in Mindat locality data. Evidence: ide vein of chloride ore. Workings include a 120 foot deep shaft and an approximate 30 foot long drift (1881). Historical context: Wo… -
Shaft
· depth 120 ft
Documented in Mindat locality data. Evidence: on is a 3 to 5 foot (1 to 1.3 meter) wide vein of chloride ore. Workings include a 120 foot deep shaft and an approximate 30 foot lon…
- Derived from MRDS oper_type (existing operation): Underground
- MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Underground · oper_type
Verification
Mindat Confirmed
Mindat locality corroborates underground workings.
Why confirmed?
Mindat locality corroborates underground workings.
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
- Chlorargyrite
- Native Silver
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 (4)
- mapped adit symbols (3)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 134169
Supports:
- locality identity
- reported minerals (2)
A Mindat locality match does not by itself establish underground workings.
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