Monumental Consolidated Quartz Mine

Key facts

State: California
County: Del Norte
Mining district: Monumental
Development status: Past Producer
Mine type: Underground
Primary commodity: Gold
Verification: Unconfirmed

Mine Location

Approximate Area

Documented underground workings

Mindat locality description

A former Au-Fe-Pb-As-Cu mine located 2.1 km (7,000 feet) NNE of Monumental near the Oregon state line. Mineralization is a vein deposit (banded iron formation - probably), hosted in greenstone and slate. Local structures include a fault. Produ…

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Additional documented workings

Shaft — documented in 1 source record, noting 73.15 ft deep.
USGS Mineral Resources Data System

View individual source records (3)

Every underlying record used to build the summary above, for research/verification use.

Shaft · depth 73.15 · length 73.15
USGS MRDS working type: Underground

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.

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Why it's listed

USGS source data documents underground workings for this record.

View sources & evidence

History & operations

Historical record

Development status: Past Producer

Commodities & minerals

Reported minerals

Quartz
Gold
Native Gold
Quartz

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

Mindat

Type: Mineralogical locality database

Record: Mindat Locality: 74695

Supports:

locality identity
reported minerals (2)

A Mindat locality match does not by itself establish underground workings.

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