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California · Inyo County

Big 4 Iron

Unconfirmed Iron Mixed Underground / Surface 2 mapped shafts 5 mapped adits

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Key facts

State
California
County
Inyo
Mining district
Argus
Development status
Occurrence
Mine type
Mixed underground / surface
Primary commodity
Iron
Verification
Unconfirmed

Mine Location

Approximate Area

Open in Mine Map

Documented underground workings

  • Adit — documented in 2 source records.
    USGS Historical Topographic Mine Features
  • Shaft — documented in 2 source records.
    USGS Historical Topographic Mine Features

Historical mapped workings

USGS historical topographic mapping. Features may no longer exist.

  • 2 shaft symbols
  • 5 adit symbols
  • Shaft : Maturango Peak , 1951
  • Adit : Maturango Peak , 1951
  • Shaft : Maturango Peak , 1982
  • Adit : Maturango Peak , 1951
View individual source records (6)

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.
  • Adit
    Mapped on historical USGS topographic data (Adit). Historical map features may no longer exist in the field.
  • Shaft
    Mapped on historical USGS topographic data (Mine Shaft). Historical map features may no longer exist in the field.
  • Shaft
    Mapped on historical USGS topographic data (Mine Shaft). Historical map features may no longer exist in the field.
  • USGS MRDS working type: Surface/Underground
  • MRDS work_type documents underground workings: Surface/Underground · work_type

Verification

Unconfirmed

Source records support underground workings, but UndergroundMines has not yet independently verified this mine.

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Why it's listed

Source records document both underground and surface mining.

View sources & evidence

History & operations

Historical record

  • Development status: Occurrence

Commodities & minerals

Reported minerals

  • Quartz
  • Limonite
  • Pyrite

Access & recent conditions

Land
unknown

Community reports

No community field reports yet.

I Visited This Mine

Sources & evidence

USGS Mineral Resources Data System

Type: Historical mine record

Supports:

  • mine identity
  • development status
  • commodities
  • underground eligibility evidence

USGS Historical Topographic Mine Features

Type: Historical mapped physical features

Dataset: DOI 10.5066/P9TAALR6

Supports:

  • mapped shaft symbols (2)
  • mapped adit symbols (5)

Historical mapped features may no longer exist.

Dataset information

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