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California · San Diego County

Trask Mine

Unconfirmed Semiprecious Gemstone Underground

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Key facts

State
California
County
San Diego
Development status
Past Producer
Mine type
Underground
Primary commodity
Semiprecious Gemstone
Verification
Unconfirmed

Mine Location

Approximate Area

Open in Mine Map

Documented underground workings

Mindat locality description

Setting: The Trask mine is located just south of the center of the SE4SW4 Sec. 17, T11S, R2E, SBM, approximately 2.75 miles (4.42km) northwest of Mesa Grande, situated high on the eastern slope of Gem Hill, at an elevation of approximately 3822' AMSL…

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): Underground
  • MRDS oper_type documents existing underground operation (dev_stat=Past Producer): 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

USGS source data documents underground workings for this record.

View sources & evidence

History & operations

Historical record

  • Development status: Past Producer

Commodities & minerals

Reported minerals

  • Elbaite
  • Feldspar Group
  • Mica Group
  • Perthite
  • Quartz
  • Schorl
  • Stibiotantalite
  • Tourmaline

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: 91627

Supports:

  • locality identity
  • reported minerals (8)

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

View on Mindat

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