California · Mendocino County

South Thomas

Unconfirmed Silica Mixed Underground / Surface

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Key facts

State: California
County: Mendocino
Development status: Past Producer
Mine type: Mixed underground / surface
Primary commodity: Silica
Verification: Unconfirmed

Mine Location

Approximate Area

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Documented underground workings

Mindat locality description

A former Mn-silica mine located 5.0 km (3.1 miles) NE of Redwood Valley (town).

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.

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History & operations

Historical record

Development status: Past Producer

Operators / organizations

Charles W.,Leland J.,Raymond C. Smith · Source-reported owner · 1975

Commodities & minerals

Reported minerals

Chert
Psilomelane
Pyrolusite
Rhodochrosite

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: 82784