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California · El Dorado County

Sheppard

Unconfirmed Chromium Mixed Underground / Surface

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Key facts

State
California
County
El Dorado
Development status
Past Producer
Mine type
Mixed underground / surface
Primary commodity
Chromium
Verification
Unconfirmed

Mine Location

Approximate Area

Open in Mine Map

Documented underground workings

Mindat locality description

A former Cr-Fe occurrence/mine located in sec. 32, T12N, R10E, MDM, about 7.35 km N of Coloma and 2.3 km (1.4 miles) W of Garden Valley (on the crest of a low ridge), on private land (located claim). Discovered in 1916. First production occurred in 191…

View full locality record on Mindat

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.

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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

  • Chromite
  • Serpentine Subgroup

Access & recent conditions

Land
unknown

Community reports

No community field reports yet.

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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: 78190

Supports:

  • locality identity
  • reported minerals (2)

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

View on Mindat

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Historical mapped workings available