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California · Calaveras County

Reef Rock

Unconfirmed Gold Mixed Underground / Surface

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Key facts

State
California
County
Calaveras
Development status
Past Producer
Mine type
Mixed underground / surface
Primary commodity
Gold
Verification
Unconfirmed

Mine Location

Approximate Area

Open in Mine Map

Documented underground workings

Mindat locality description

A former lode Au mine located in the NE¼ (estimated) sec. 13, T3N, R13E, MDM, 1.8 km (1.1 miles) E of Cave City and 2.3 km (1.4 miles) WSW of Sheep Ranch, on the ridge, E side of O'Neil Creek. MRDS database stated accuracy for this location is 100 mete…

View full locality record on Mindat

View individual source records (2)

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

  • 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: 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: 75826

Supports:

  • locality identity
  • reported minerals (2)

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

View on Mindat

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