USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Pima County
Old Yuma Mine
Unconfirmed Molybdenum Mixed Underground / Surface
Key facts
- State
- Arizona
- County
- Pima
- Development status
- Past Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Molybdenum
- Verification
- Unconfirmed
Also known as
- Yuma Mine
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former small surface and underground Pb-Cu-Zn-Mo-Ag-Au (V) mine located in the center of sec. 9, T13S, R12E, G&SRM, 1 mile ENE of the Tucson Mountain Park. Owned/operated, in whole or in part, by Col. Randolph; the International Ore Separation Compan…
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- Derived from MRDS oper_type (existing operation): Surface-Underground
- MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Surface-Underground · oper_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
Source records document both underground and surface mining.
History & operations
Historical record
- Development status: Past Producer
Operators / organizations
- Consolidated Mining And Milling · Historical operator · 1987
Commodities & minerals
Reported minerals
- Andesite
- Anglesite
- Calcite
- Cerussite
- Chrysocolla
- Descloizite
- Fornacite
- Galena
View all 24 reported minerals
- Andesite
- Anglesite
- Calcite
- Cerussite
- Chrysocolla
- Descloizite
- Fornacite
- Galena
- Hematite
- Malachite
- Minium
- Mottramite
- Muscovite
- Opal
- Opal-AN
- Plattnerite
- Porphyry
- Quartz
- Quartz-monzonite
- Sericite
- Tetrahedrite Subgroup
- Vanadinite
- Willemite
- Wulfenite
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Record: 1 historical document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: 3372
Supports:
- locality identity
- reported minerals (24)
A Mindat locality match does not by itself establish underground workings.
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